I usually like switching up the coasters I use for my coffee table — Elegant and chic for dinner parties, vibrant and sassy for everyday use. Take for instance the circuitboard coasters, which can play double duty from day to night. Here are some geeky coasters that are guaranteed to brighten up the dullest living room. Brought to you by Supermandolini (and spotted on techabob), these super-bold floppy disk coasters have a foam base, vinyl top, and gloss finish — making them nice and user friendly! A set of six costs about $40. Do tell if you think they are too geeky for your liking!