Amazon.com: Maggie Snaps Triple Pack, Magnetic Snap Buttons, Patented Magnetic Balls for Fastening Fabrics, Alternative to Safety Pin, Includes 2 Mid-Size and 1 Mini Round Magnets - My Maggies
Magnetic Snap Fasteners Handbags | Sew Magnetic Snap Magnet Button - Snap Fasteners - Aliexpress
Magnetic Snap Set, Invisible, Sew-In - 14MM (5/8") - Nickel, Set of Two