It’s mostly enterprise stuff. I have a local rails app and local springboot app that I keep around and am constantly trying stuff out in. If it starts to look like it would be generally useful I will rip it out, put it in it’s own repo, set it up in a jenkins pipeline, and then have the jar/gem published to an internal artifactory instance. Then I can just include the jar or gem in other codebases as needed. Works great and keeps me from doing a bunch of boilerplate for something which may go nowhere.