Built a treehouse with my boys this summer
Just finished it last weekend. Took us about 4 months of weekends but we got a legit 8x8 platform built in the oak tree in our backyard. The kids helped with every step and honestly it was way more work than I thought but so worth it. Now they actually want to spend time outside instead of gaming. Best decision ever.
Man that's awesome. Nothing beats building something with your hands and having your kids be part of it from start to finish. They'll talk about this for years.