This is my personal creative playground for Witchcraft, the Clojure library for interactive Minecraft coding. It contains numerous helper functions, code to generate structures or shape landscape, and interactive sessions of specific projects (under repl_sessions).
You are welcome to steal from here, or just use it as inspiration. I'm putting it out here so people have a place where they can find a bunch of example code of what you can do with Witchcraft.
Big shoutout to Glowstone which makes all this fun stuff possible.