experimental projects i consider a rite-of-passage for transcending from [inexperienced] into the top 90% [experienced] based on my terms this is a good reference: https://austinhenley.com/blog/challengingprojects.html
- a state machine, something like the evm (vm) [2025]
- compiler [2025]
- interpreter
- game engine
- operating system
- ray tracing [2025]
- some 3D robot, havent't given it much thought
all for learning and research purposes