DynamicLand

Incredible project, found by student Paul Wilshaw

Check out their website, but here's a video to get started.

Dynamicland is a magical place that you can program using sheets of paper. Here's a quick intro: https://youtu.be/OQpr454yhvM This quick vid shows you more of the possibilities available! The code is Lua, and you can modify the OS, too (it's on a bunch of sheets taped to a whiteboard).