You guessed it, boats. I have built a stitch and glue (plywood) sea kayak[0], an Aleutian-style skin-on-frame sea kayak[1], and a skin-on-frame canoe[2]. All were fairly approachable and straightforward projects (I built the first two with basically some hand tools, a drill and a jig saw, on my deck, but a table saw is highly recommended for skin on frame). Tons of fun and the feeling of being a couple miles offshore or cruising down rapids in a boat you built yourself is awesome.

[0]: https://clcboats.com/shop/boats/kayak-kits/petrel/stitch-and...

[1]: https://www.amazon.com/Aleutian-Kayak-Construction-Tradition...

[2]: https://www.capefalconkayaks.com/canoes.html