You can order the MagnoGrip magnetic wristband at Amazon for $11 (USD); there's also a pink-colored version but it's more expensive.
WHY IS PINK MORE EXPENSIVE? What is pink dye a hot commodity now or something? Ladies love pink and you know it. I SMELL SEXUAL DISCRIMINATION! Or dog shit. *sniff* Oh yeah, that's shit alright. *sniiiiiiiiff*