Built a treehouse with my 6yo and it's actually standing

Started this thing last month and honestly wasn't sure we'd finish it. Got some 2x6s, old deck boards, and a rope ladder from Harbor Freight. My son picked out the paint color (neon green, of course). We spent most of Saturdays in September just measuring twice and screwing things together. The thing is wobbly as hell but he loves it and that's what matters. Already planning phase 2 which will probably involve more rope and definitely a bucket pulley system. Anyone else build treehouses with their kids?