This is an interesting idea – it’s called Woodpixel. It’s a commercial product that lets you create your own pixel art. It comes with 100 wooden blocks with a different wood tone on each side and it comes with a holder to hold the 100 blocks in place. This would be a great way to make some classic/retro video game art. Their site shows a Space Invader, Mario, and a (poorly done) Pac-man Ghost. They are taking pre-orders now – no word on price. I bet it’s expensive though.