Neodymium Magnets, also known as rare earth magnets come in many different shapes, sizes and strengths. Pictured to the left are just one of the many types of Neodymium magnets that can be used in toys and customs. Just a slight warning of large Neodymium magnets, These are incredibly strong magnets (I am not kidding, I've gotten blood blisters on my fingers from my fingers being pinched by two attracting magnets.)