50pcs 5mm x 3mm (3/16" x 1/8") Disc Magnets – Magnet Baron LLC
Amazon.com: 40pcs 6*3mm Small Magnets for Crafts - MEALOS Mini Magnets Tiny Magnets - Little Button Magnets Micro Magnets - Round Fridge Magnets Also for Miniatures, Model Making, Crafts and 3D Printed
N35 Neodymium Disc Magnet - 10mm dia x 3mm thick - 3.3lbs Pull
Magnet, Neodymium 25 x 9 x 3 mm. - Science First
N35 Neodymium Disc Magnet - 3mm dia x 1.5mm thick - 0.39lbs Pull