Hey, if you're interested in bare-metalling the Pi, you should look into this... BEFORE NOVEMBER NINTH:
Have an awesome Raspberry Pi project in mind (or maybe sitting on your bench right now)?
Show it off for the Enlightened Raspberry Pi contest and you can score some excellent loot.
Find out more here:
As far as I'm aware, there aren't many bare-metal Pi projects out there, and even fewer on .io... So I'm totally guessing here, but something little more complex than a bare-metal-blinky-pi could be surprisingly competitive.
Get to work!