Not only was this super fun, but once again, I feel like this episode filled in some really important gaps in my PS knowledge. I had been really been missing that Illustrator capability to repeat transform, and in this episode, I learned that PS has it too! Little things like that have really helped.
But the fun part:
I played around a lot, and ended up liking simple concentric rings the best. I have four examples below, the left two blended using linear light, the top right using pin light, and the bottom right using vivid light.