I dunno about other guy, but I came here to say 3d printer.

I've printed small plastic parts to fix the flush mechanism of a toilet for pennies. I've printed little utility items like hangers for parts to paint. Holders for dnd minis to make painting them easier. Storage boxes to organize small parts for various other hobbies. Giant realistic cock and balls turned into a trophy. Replacement parts for board games that have been lost or broken over the years. Custom dice towers and dice boxes for dnd dice sets. Etc.

The ability to see a need, take some measurements, and spend a few minutes in a cad software to have a replacement part that you otherwise can't find (or can't find by itself) is honestly amazing.