This officially-licensed lamp from Merchoid measures 12-inches high and is powered by either a USB plug or three AA batteries. The sword is a replica of the Master Sword from Twilight Princess, and it turns on when you push the Triforce logo, which is a neat touch.
Look, this isn’t an ad, and I don’t want to tell you what to do, but if you’re a Zelda fan then you might be legally required to buy this. Check with your local councilperson. Here’s another look at the lamp from a strange angle.