RC stuff, but only kinda? My dad got me into micro helicopters about a decade ago. I now have several dozen planes, drones, helis, etc. Not to mention multiple RC radios, batteries, chargers, and FPV goggles. Absolutely love it, though. To be fair, it’s been a few thousand dollars over a decade. It ads up sure… but quite a bit less than I spend on video games, and more satisfying. :)