If you’re in a pinch and you’ve got shrapnel making it’s way to your heart, don’t count on these Iron Man Arc Reactor coasters to save your life. Sure, they glow just like Tony Stark’s, but I assure you that these are just for show. Don’t believe me yet? They’re only $29.99 for a set of four at ThinkGeek. Do you think a real arc reactor would be that cheap?