By making use of an old recycled circuit board this fridge magnet is a perfect present for any geek. It has the circuit board, 2 keyboard keys and a couple of electrical diodes. The magnet is strong enough to not let it slip when attached to a fridge door and is a geeky way of leaving notes for your loved ones.
You can pick one of the circuit board fridge magnets for $8.00 from Etsy.