Maths game based on Wordle - https://dkl9.net/functle/
Minecraft-like game prototype - https://dkl9.net/essays/python_voxels
Diverse-order sampling by trie - https://dkl9.net/essays/diversity_algo
Memoire spaced repetition system - https://dkl9.net/memoire/
SDL-based image viewer
Formula calculator - https://dkl9.net/rtensor/
Many of the files behind https://dkl9.net/
Material for a handwashing tutorial - https://dkl9.net/essays/handwash_how
Terminal program to practise weird mental arithmetic