Built a treehouse with my kids and it actually didn't collapse
So I promised the boys a treehouse last spring and finally got around to it this past weekend. Grabbed some 2x8s from home depot, borrowed my buddy's circular saw, and we spent Saturday morning figuring out how to attach the support beams. My oldest is 8 and actually helped drill holes. The thing is sturdy as hell, cost me about 400 bucks in materials, and they've been up there every day since. Wife thinks I'm crazy but honestly it's the best money I've spent in a while.
The fact that it didn't collapse is genuinely impressive haha. Seriously though this is the kind of project kids talk about for the rest of their lives. You crushed it.