Experiments
Here are a few Javascript experiments I've written.
A divination game. You press the D and F keys of your keyboard, and the computer tries to guess which one you'll press next. The goal is to be random enough to prevent the computer from achieving an accuracy significantly higher than 50%.
A tool to check which Sci-hub domains work and which are down
A tool to generate useful features for Minecraft test worlds
A game about clicking Nicolas Hulot's face. There are two boxes with the same faces at the same places, except for one extra face in the left box. The goal is to click that extra face.