The thing I like the most about my minipov3 project is that its not just blinky, but it has a built-in AVR programmer. That little extra makes it possible to turn the kit into a brain-machine or an LED cube. Or you could pop the ATtiny2313 out and turn it into a general purpose programmer, like uzimonkey did! Go over to his blog to see how he used his to program the Arduino bootloader into a chip with a few wires.