Extra Strong Magnets 5mm x 1mm Disc Rare Earth Neodymium Magnet Small N35 | eBay
Study calls neodymium magnets "serious health risk" for kids
Rare Earth Magnets | First4Magnets
Super Neodymium Magnets
Super Strong Magnets 1mm 2mm 3mm 4mm 5mm 6mm Small Disc Magnets Neodymium N35 | eBay
Neodymium magnets - Magnosphere
Magnet Source Super Neodymium Disc Magnets .472" dia. x .118" thick 6/Pkg. - Walmart.com
Super strong' magnets - National Child Mortality Database
CMS Magnetics® Super Strong Neodymium Magnets Ring N45 1-1/2"OD x 1.065"ID x 3/8" - Rare Earth Ring Magnet - Science Projects School and Magnetism Education: Amazon.com: Industrial & Scientific