It seems that everyone and their mother is cramming various projects into mint tins these days. I just couldn't resist jumping onto that bandwagon. The only question was what project to build?
I ordered a MiniPOV3 kit from the Makezine Store, a while back. After building it and playing with it, and letting my kids play with it, and repairing it a couple times after the kids played with it, I decided it needed a case to live in. Realization struck. The first thing I did was check Google to find out if it had been done before. As far as I could tell, it hadn't, so I started gathering parts.
Rather than mess up my original kit, I decided to scratch build the circuit on perfboard. I used LEDs that I had harvested from a string of LED christmas lights, resistors and other bits from various sources, and the requisite mint (Wintergreen flavor) tin.
I wonder if my neighbors thought I was doing some at-home dentistry as I was doing the cutting on the balcony of my apartment.
Here it is fully assembled. I used hot glue to attach some plastic standoffs to the back of the board, and to hold the board and battery holder in place. There is no on/off switch. I just jam a piece of cardboard between one battery terminal and its contact. I left off the programming circuitry. If I want to reprogram it I have to pull the chip and put it back into the original MiniPOV board.
Here is a short YouTube video of it running my Cylon program with PWM for the fading LED.
I posted the source code here, in the LadyAda forums.