Not my project - found this courtesy of Hack-a-Day.
This free and open source software tool is designed to make it easy for individuals to keep track of both the routine maintenance needs of their vehicles, as well as keep track of any previous or upcoming repairs and upgrades.
Demo here: https://demo.lubelogger.com/Login/Index
User/pass: test/1234
There is Homebox for keeping a list of things you have (and what they are worth) for things like insurance claims.
There is Audiobookshelf for your audiobook collection
There is wanderer for hiking and biking trails