Eric Nocella Diaz - from Argonaut Resins - was showing off these refrigerator magnet designs around at Toy Fair 2010. After getting some good responses, he decided to make 4 full sets for sale.
The first batch went up for sale in the Argonaut Resins online store last night for $45 (including shipping). The other three sets will follow sometime next week. Each head comes with an embedded circular magnet in the back, so you can stick them on your fridge...next to junior's report card.