3/4 x 1/16 Inch Strong Neodymium Rare Earth Disc Magnets N52 Bulk Super Powerfull Large Thin Flat Round Magnets Amazon (1.68 lbs Pull Force) - TAO MAGNETS
Amazon.com: NextClimb - Flat Adhesive Magnetic Strips, Extra Strong Magnetic Strips with Adhesive Backing, Magnet Strips for Most Surfaces, Lightweight Flat Magnets (1 x 5.8 in, 3M Tape 5-Pack) : Industrial & Scientific