- [games](game.md) such as [chess](chess.md), [go](go.md) and [shogi](shogi.md), even vidya gaymes (programming them and/or playing them), but only old+libre ones
- [open consoles](open_console.md) and [fantasy consoles](fantasy_console.md), cool [embedded](embedded.md) programming without [bullshit](bullshit.md) (see also [SAF](saf.md))
- randomly stumbling upon sites on [wiby](https://www.wiby.me/), wikiindex, finding [politically incorrect](political_correctness.md) stuff in old [encyclopedias](encyclopedia.md) and generally just digging out obscure data
- math and data visualizations, e.g. [fractals](fractal.md), [phase diagrams](phase_diagram.md) (https://yt.artemislena.eu/watch?v=b-pLRX3L-fg), strange [attractors](attractor.md), [procgen](procgen.md), [cellular automata](cellular_automaton.md), plotting wild 2D [functions](function.md), ...