This project uses the Simple LED Animation Kit (SLAK post or page) with the LEDs arranged in a circle around the PIC16F628A. Although the only difference from the basic SLAK is the board design, I find that this layout to be have the potential to be more useful. It could easily be a medallion on a necklace.
This board only needs 4.5V and in the video is running on only 3 AA batteries. You can see that the PIC is still in a socket. You can even design you’re custom animation with a bit of PIC knowledge.
Circle LED Animation: [Link]