Previously I have written about a NES System in a cartridge. This is much cooler than that. I have stumbled upon a mod that puts the entire NES system in a NES controller. G-force, a modder from Benheck forums, has this to say about his creation:

“I took a famiclone (Super Joy III) and put it in a controller, with a bit of style and quality added. It was made for my girlfriend who’s a big NES nut like me. That made it easy to guess a gift for her birthday. Just thought, “What would I want?” I got it made a little late, but it was worth it to make right.”

I’m sure he scored huge points with his girlfriend because of this gift. Plus his mini NES controller system has tons of features such as built-in games including Tetris and Contra, a cartridge connector at the back, and a 2^nd player controller port.

G-force has a gallery of the components and the actual controller system here.