My son is having his 11th birthday next week and has asked for a sleepover with 4 of his closest friends so they can play XBox and Nintendo DS games. He just bought his first DS with his own hard-earned money (and a little help from his older brother), so he is really passionate about Nintendo right now. This morning he asked me if I could make his invitations look like the Nintendo DS, and he went on to describe what he wanted. So the design is my son's idea, I can't take credit for that, but here is what I came up with. It is all computer generated.
The front of the invitation:The inside, with his Nintendo in the background:
A closer view of the inside: