Laminated Neodymium magnets for whiteboard and office use
TSUTA 8Pcs Rubber Coated Magnets, 40LBS Neodymium Magnet Base with M6 Threaded Studs and Nuts, Strong Flag Magnet Mount Base with Black Rubber Coating: Amazon.com: Industrial & Scientific
16.6mm dia x 5.1mm thick x 4.2mm c/sink Rubber Coated N42 Neodymium Magnet - 1.9kg Pull (North)