If you’re overwhelmed trying to choose the right gift for the special geek in your life, look no further! Consider buckyballs, a collection of magnets, known to science nerds as fullerenes. They’ll have fun for hours creating shapes out of these magnets. Another geeky gift option is the Portal 2 warning sign coasters, featuring various images of warning signs one encounters while going through the testing process in this popular game. Read on as eBay highlights more low-tech gifts for geeks.