Alnico 5 Magnets for Guitar Pickups, Flat Top, .195" Dia.
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) - Walmart.com
Flat Bar Magnet | Neodymium Rectangle Magnets | CMS Magnetics
Amazon.com: Strong Thin Disc Neodymium Magnets with Adhesive Backing - Round Flat 1.26" x 0.06" for Office, Fridge, Craft, Science, DIY Magnets, Pack of 12 : Industrial & Scientific
Thin Round Disc Magnets 3/4x1/32 - Magnetic Sticker Holder Fastener Scrapbooking Crafting Circle 20x1mm Slim Flat Magnet Disk (32 Pack): Amazon.com: Industrial & Scientific
Cheap Strong Long Thin Flat Rectangular NdFeB Magnets - China Bolinha De Ima Magnetica, Free Sample Neodymium Magnet | Made-in-China.com