Lu Wilson has many very curious and fun projects. There is a youtube channel called sandpond. There is a visual programming tool based on automata I think. There are quite a few websites and the projects are hard to navigate. As in, there isn't a single place where you can see everything. Most of it looks intentionally cryptic. You won't find documentation for arroost or that visual programming environment.

It's fun, but hard to explore and see what Lu is doing, no matter which platform you choose to follow. I have tried, it's very intriguing, but its like a spiders web.