http://nintendo-papercraft.com/
They give you textures you can download as images or PDF files, and you cut them out and put them together. This is really cool!!
Difficulty ranges from rather simple...

...to incredibly complex...

(yes, that is made of paper)
I've already made a little paper Gamecube and I'm working on a minecraft-style Link. What do you guys think about this?
Minecraft Link pic