United Nuclear has a good idea here. They believe that all other magnets are wimpy and puny! So they make high-quality neodymium magnets for you to play with. These magnets are rated at N40, unlike other magnets which clock in at under N40. What's this mean to you? It means these are some strong-ass magnets to play with. They attract metal from over 12 inches away and if you buy the hardcore kind, they can even bruise you or break your fingers, according to the website. Sounds like the perfect thing to get your kid for the holidays so he or she can put the serious hurt on the little brother/sister.