[michaelcampbell]

> Everyone is building tools for tool builders to make it easier to build even more tools.

A lot of hobby level 3d printing is like this. A good bit of the popular prints are... things to enhance your printer.

Oddly, woodworking has its fair share too - a lot of jigs and things to make more jigs or woodworking tools.

[iso1631]

it does seem that every woodworking channels starts with "building your workshop", then runs out of ideas pretty quickly.