A simple wooden boat that isn't from any modern era. The ones I've seen with rpg maker are good but sadly specific to RPG Maker.
It's also occurring to me having a boat in this small compact size and shape is definitely not suited to the era I'm going for lmfao, so I might have to insert some of your wizard rune stuff and try out water effects with unity's particle system to make it make more sense via magic for the boat I'm working on.
By the way, does your itchio page have a forum or anything? I know some itchio creators have one on their profile somehow, and I think it'd be a good thing to have since it'd be better for me to use that instead of me putting every single 3d dungeon test under the product itself, but I can't find one on your itchio.
If you wanna look into other 3d tileset tools, this page lists a few and offers its own tool specifically for Unity. https://forum.unity.com/threads/free-3d-tilemap-system-for-3d-pixel-art-games.71...
It lists Sprytile and Crocotile3d, the latter I haven't tried yet.