cars:
1. summer of 1983, neighbor of dad's friend has 1972 Monte Carlo brought home on a hook. shop diagnosed as "needs engine", kid couldn't afford to fix.
dad pulls distributor cap, asks kid to crank engine, rotor doesn't move, dad offers $100 and kid accepts. we go to NAPA and get timing set, fix in driveway over weekend, drive home for grand total of about $121. that car was my HS graduation present @123k miles. i junked it 8 years later at 254k.
2. spring of 2003, my buddy's '96 probe GT with 142k is making hella rattle, sounds like connecting rod wants to come out. towed to garage, "needs engine", he's already ordered a new 2003 Mazda6, tells me $1250 and it's yours".
google suggests timing belt tensioner strut failure. garden hose stethoscope confirms. buddy refuses to accept more than $1250. i paid the man, towed it home, R&R timing kit plus water pump, and daily'd for 8 years including driving to and competing in $2006 challenge (31st out of 62, went 15.12 @ 89 bone stock with full tank of 87 octane). sold at 229k.
non-cars:
1. winter 1995, boss says "old snowblower doesn't run, who wants it?" tightened spark plug, used for 7 winters, gave to neighbor when we moved.
2. winter 2017 iirc, old-ish neighbor has baller honda 2-stage snow thrower that (1) is too big for him to handle and (2) only runs on starting fluid.
disassemble fuel shutoff valve, clean ethanol goo, reassemble, agree to clear his sidewalk for the life of the machine. so far, so good.