I bought a 1985 Honda 125M about 25 years ago from a garage sale for $50.
https://www.youtube.com/watch?v=DKOotZqSNM8
It had flat tires, broken headlight, and a fouled plug. A tire tube, new spark plug, and a different headlight made it into the best vehicle I have ever owned. My son, and daughter both learned to ride on it, ecxplored countless farm lanes, and woods, and it hauled countless loads of firewood, and pulled sleds full of happy kids. I sold it about 5 years ago for $400, but wish I still had it.
I currently still have my Kawasaki DX225 3 wheeler, which I plan on refurbishing to like new this Summer.