first4magnets™ F042-N35-50 Magnet Expert 4mm dia x 2mm thick N35 Neodymium Magnet - 0.38kg Pull ( Pack of 50 ) : Amazon.co.uk: DIY & Tools
Magnet Expert® 4mm dia x 3mm thick N42 Neodymium Magnet - 0.54kg Pull (Pack of 20) : Amazon.co.uk: DIY & Tools
Amazon.com: MEALOS Magnets - 150 Tiny Magnets Mini Magnets Small Round Magnets for Crafts - 5mmx2mm Magnets for Miniatures Small Models - Come with a Storage Case : Home & Kitchen
ZDYWY 20 Pieces 12 x 4mm with 4mm Countersunk Hole Permanent Disc Rare Earth Fastener Magnets Refrigerator Neodymium Magnets - 0.47 inch D x 0.16 inch H with 0.16 inch D Screw Hole: Amazon.com: Industrial & Scientific