Check out some of the most geeky wedding rings in the market. Double helix eing, engagement rings and some more can be listed as some of the nerdy engagement rings in town. If your partner is geeky enough, such rings can be a perfect engagement ring.
Nintendo-themed coasters in a controller box made from those iron-together beads. This is a really fun idea, and easy too. They could be any sort of pattern, maybe minecraft, or even just anything. Perfect for a game room.