I'm using the Tri-tips--those three little drop shapes that I used in the pattern Tri-Me--again. It's really a very effective enhancement.
This pattern also uses a very common repetition technique, where you keep repeating the same shape in increasingly smaller sizes. This could be done with triangles, circles, almost any shape you want. As you can see from the example, you can repeat the shape once all around the original shape or keep drilling down and repeating until you run out space. There is a very interesting video that shows this geometric feature in action. It's highly entertaining as well!