Neodymium magnets are becoming World Famous for their amazing lift to weight ratios. It used to be you could only find Neodymium magnets in specialized equipment like hard drives. Now they are creeping up more and more in everyday life. You could even consider making your own. How? It's very simple! You just find yourself a nice chunk of some Misch metal from the Earth's substrate, then carefully extract any Neodymium, purify it, mold it, coat it in a small amount of nickel, and then wrap some plastic around it in the shape of a thumbtack. Voila.
Rare Earth Magnetic Fridge Pins