What’s something you own that has truly paid for itself?

https://lemmy.dbzer0.com/post/55924735

What’s something you own that has truly paid for itself? - Divisions by zero

I’m curious, what’s an item, tool, or purchase you own that you feel has completely justified its cost over time? Could be anything from a gadget to a piece of furniture or even software. What made it worth it for you?

A slipping torque wrench, two jack stands, and a hydraulic jack. I change the summer and winter tires on several cars twice/year and have been since the 90s