Fuyuko, Derek, and Shizoku spent most of a day dealing with their accumulated gains and preparing for their first day of exploration. Shizoku spent a fair amount of that evening's time communing with Bip, her slime familiar. She needed to adjust what spells she had at the ready for dealing with a wetlands environment.
While she was studying her grimoire, Derek and Fuyuko were preparing more physical means of dealing with the wetlands. Most of their work had been dealt with by trading the boat for three pairs of proper swamp boots, but the footwear needed a little adjusting and resizing for each of them.
The over boots were a combination of different techniques for dealing with different sorts of mud, with the base being a raised wooden sole that 'winged' out to resist sinking further into soft mud that was deeper than the ridges raised the sole. These were attached to oiled leather over boots that were useful for wading. The wooden soles were detachable for prolonged wading where they would provide a hindrance.
Derek could reshape the wooden portion to match their feet exactly, and reshape metal fittings if needed, but leather and cloth needed manual adjustment. Given how long they were planning on using these for, it was important to make them fit as perfectly as possible to prevent blisters and sores, even with their normal footwear underneath the boots.
They began their exploration by using the mapping tools they had won in the library to learn the layout of the swamp near the town. It didn't take them long to realize that some of the islands moved very slowly, and Derek was able to use elemental talents to investigate, leading to the disturbing realization that under the right conditions, mud could have currents and flows.
Shizoku's magic wasn't quite as effective as she would have liked, for most of it was designed to work in other environments. Magic designed to hide your tracks and traces didn't prevent you from making them in the first place, and so did not keep you from sinking into mud. She did have a spell designed to make traversal through any terrain safe and easy, but it didn't last very long and was best reserved for crossing smaller sections of really bad terrain.
Spells used for manipulating and altering plants could also provide small bridges, but these were limited by the strength of the nearby plants. Generally speaking, they were better for clearing plants out of the way.
These difficulties were inspiring ideas of future spells to research, but that required more time than just the little bit of rest they got each day.
Derek's powers were more consistent and easier to use repeatedly or for long periods, but the effects tended to not be as dramatic as the witch's spells. He could make the mud firmer or softer to a degree, but he couldn't create a solid path out of flowing silt for even a few minutes.
Fuyuko found that her long limbs and greater strength allowed her to move easier through the swamp then her friends could, just by virtue of being able to apply more force and leverage. This was why she was leading the way, Derek found it difficult to monitor the details of the mud around them while also working to firm it up constantly, and it was easiest for Fuyuko to cope with any sudden changes that Derek wasn't able to compensate for.
Their outward journey each day was mostly limited by Derek's stamina, and when he was approaching his limits they would use a combination of their maps and Shizoku's divination magics to find the best route back. Such spells required some precision in defining a destination, so they were not very useful when you didn't have a concrete destination in mind.
Because the trio were taking their time to be thorough and to explore all possibilities, it didn't take long for them to begin finding all the bounties that the swamp held in store for them. Shizoku was able to find plants with medical and alchemical uses, though she had to consult the tomes that she had stored in Bip's memories as wetland plants were not very familiar to her. Once she had identified any specific plant, she could give it to Fuyuko as a sample and the luponi could use her better senses to find more of that plant.
Fuyuko also caught the scent of some mud that was strangely familiar, and after she and Derek dug out some of the intensely colored clay, Shizoku was able to recognize it was a valuable type of clay used for making prized teapots and other pottery. This explained why the scent had been familiar to Fuyuko, as Kazue had been excited to introduce her to Cimbu and the fourteen-year-old had been fascinated by the ability to make the little clay dragon spit water without any magic involved and sometimes made some tea just to have an excuse to play with the tea pet and make him spit. Well, once she'd been shown how; tea wasn't something she'd had much experience with before.
Claiming the clay was more problematic. However much they might be able to claim in their explorations and bring back to town, there were only so many other explorers they could trade with as everyone had a limit to how much stuff they could physically haul out. In the end they decided on a single large sack of clay that would be stored in Fuyuko's spatially expanded backpack.
Derek did most of the work of 'mining' the clay, during which they made another discovery: Opals. There weren't an outrageous number of them, but they were decent-sized and high quality. These became a higher priority target than the clay itself, though they kept that too.
The teens didn't forget the lessons they'd been given about the previous level and wanted to fish here too. However, the water was murky in the places it was deep enough to possibly have fish, making it more difficult to know where the fish were.
It was only after they talked with people back at the town that they learned about fish traps, and set about making those. Specifically, eel traps. The eels were prized for both their skin and their flesh. Their skin was both durable and supple and came in a wide variety of colors and patterns, and their flesh was sweeter than most varieties found out in the world. As soon as they learned how to make and set eel traps, those were added to their routine during their explorations.
Their travels throughout the swamp also brought them to many of the scattered 'monster homes' throughout the swamp, including the time that Fuyuko nearly stepped on a kobold enjoying a nice relaxing mud bath. It was a shock for all three of them as none knew about the relatively recent acquisition of the small, scaled race.
Shizoku was fine with the kobold after she got over her shock, but she did less well when they met the crabbit, who was so kind as to sing for them. Not that any of them found the sight of the interior of the 'mouth' to be less than disturbing, but the effect on the little kitsune was profound as she tightened her lips into a forced smile despite the panic showing clearly in the lines and tension around her eyes. She did well enough to keep her reaction under control that the inhabitants chose to ignore it rather than call her out on it, which would have knocked down their standing in the witch's evaluation.
After about a week, they decided that their mapping and exploration of the swamp was about as good as it was going to get. It was time to approach the witch's hut that they'd avoided previously. The Fairy Witch was in a strange, almost manic mood and the trio quickly found out she was obsessed with creating new musical sounds.
"Alright kids," Carmilla said, "you want to pass my swamp? You have to help me out here. Look, the bards I've gotten my hands on have been great and all, even pretty damn creative. But I think I need something from people who don't know as much about music. Here's my workshop, I don't care if it's a new instrument or a new way of playing an old instrument, a different sort of harmony, or whatever. Gimme something new, and you can use anything you want here, the good stuff is in another building. Bah, this lot." She glared at a group of distant figures. "They're boring, won't even respond to me flirting with them, and not a musical bone in their bodies. Well, time to play the part. Have fun in there, but I don't really want to see you again until you got something for me."
The only one of them with any musical training at all was Shizoku, but it had never been something she'd pursued on her own. That left them somewhat aimlessly poking around the workshop and messing around with instruments they found, many of which were obviously experiments that were only finished enough to test.
That did eventually prove to be enough for inspiration. A large lute was laying on top of a narrow table, and Derek frowned thoughtfully at it. "I think I remember seeing something once that looked a little like that, but smaller. Like, it had a long board with a bunch of strings, way more than the lute, but the strings were on the top sort of like the lute, and it had a folding stand so that it sat on the ground. The lady who played it was set up in the square and taking tips, I guess to help pay her way? I don't know where she was traveling to or from, I only saw her once. I remember it being nice, but I don't remember what it sounded like exactly."
That was enough to start the ball rolling. "I think I know that one," Shizoku said, "Gran Gran has one tucked away. I don't think I've seen her play it though. Hmm. Well, she wants something new to her, and I don't think it's portable enough that most people are going to lug one down here, so maybe we can do that. I don't know how to tune without a tuning fork. Wait, Fuyuko, you have sharp ears, think you can figure out proper notes and a scale? "
Fuyuko looked at her blankly. "Um? I don't know, what does it involve?"
Shizoku gave her a quick rundown of how notes relate to each other with harmonies and gave an example by singing a few notes that were close to each other. "So like that, but cleaner. Only, we are supposed to be creative, and I know that there are different scales." She chewed on the idea for a little while more, thinking out loud while the others asked questions.
They agreed that the first step was going to be having a sounding box for the body, once Shizoku explained that was how the instrument amplified sound. Though that meant figuring out the size. Derek suggested that he try to make it as big as Carmilla could play. She wasn't as tall as Fuyuko, but she was pretty tall and had long arms and fingers.
The table seemed like a perfect frame to start with, even if they were going to destroy it, and the three of them set about scavenging the other instruments for parts. They snacked on strips of dried eel when they needed to take a break, and by evening they had a crude sound box built into what had once been the table. Even with Derek's wood-shaping skills, they were having trouble getting the salvaged parts to fit smoothly together into a single box with enough resonance.
Udup, the witch's shadow drake familiar, came out to check on them, and after getting a report on their progress offered to fetch them some food if they wanted to camp out here instead of trekking to town and back. The teens agreed that was the better idea, and it allowed them to tinker with ideas until they turned in for the night.