This website provides a simple UI for building custom datapacks for CC: Tweaked, allowing you to add new turtle tools, and tweak other behaviour.
Download as a datapack. This file should be saved to datapacks/customisations-for-cc-tweaked.zip
in your world folder.
Download as a mod. This file should be saved to mods/customisations-for-cc-tweaked.jar
in your Minecraft folder.