TRYMAG Magnets, 30Pcs Strong Rare Earth Magnets Small Round Fridge Magnets for Whiteboard, Heavy Neodymium Magnets Locker Magnets for Crafts, Whiteboard, Scientific Models - 0.47 inch D x 1/8 inch H: Amazon.com:
Pair of Neodymium Magnets - Arbor Scientific
Apex Magnets | 10mm x 10mm Cylinders - Neodymium Magnet