Now here's a geek-inspired home accessory that won't make your nongeeky friends call you names like "dork" or "loser" (hmm, maybe you should get new friends). This Math Signs Coaster ($22) set is made of sharply cut felt and depicts the math symbols you first encountered as a baby geek. Now that you're a grown-up geek, you're entitled to have those same symbols on your coasters, especially when Read more