Built a treehouse with my kids this summer

Finally finished the treehouse I promised my kids two years ago. Got some plans online, dragged my brother in law over to help, took longer than expected (doesn't it always?) but man it was worth it. Watching my kids play up there, their friends coming over to check it out, knowing I built something with my own hands for them to enjoy. Best weekend project I've done. Now my son wants to build a deck next year. I'm already mentally preparing myself.