A remix of a screensaver you've probably seen before, but simpler! The edge-bounce makes no sense (silly me, not anymore), but other than that... It's the same!
An original project that I coded and modified in about 10 minutes. I is proud. Bundt cakes. OK, here's the one and only changelog I will post on this project. June 22, 2018: I rediscovered the "if on edge, bounce" block, which is in the Motion section. How I didn't see this before, I have no clue.