Even geeks don't like it when you put your drink down on their nice hardwood furniture, you know. If it's humid at all, the condensation can make a ring which could stain the furniture permanently, and then what are you gonna do? It would be ruined. Ruined! But if you'd use these Circuitboard Coasters, everything would be okay, since they'd be stylishly geeky and protect the furniture. Not too bad! $19.99 USD.