Things I do
Habitica for iOS
Official iOS app for Habitica, that allows users to gamify their life
Habitica for Android
Official android app for Habitica, that allows users to gamify their life
Hardware für alle (defunct)
Website to exchange old hardware with people who are in need of it.
Inventory managment system for hardware with an easy to use web interface. Written for my workplace, but somewhat flexible.
Parametric super market coin
A super market coin that you can attach to your keychain and pull out of the cart, after you used it.