As part of our ThinkGeek Giveaway Week, we’ll be covering one ThinkGeek product per day, Monday through Friday. Stay tuned, and don’t forget to sign up for the giveaway!

We’ve mentioned the Suck UK Glow Brick on GearCrave before, but we had to remind you in case you should be a winner for this week’s ThinkGeek giveaway. The Glow Brick is a glow-in-the-dark light bulb encased in a solid acrylic brick. This three-and-a-half by three-and-a-half by five inch brick sits on your desk and collects light energy during the day, only to glow brightly at night– enough so the bulb shape in the middle looks like an actual light on its own. Available in blue or green.

Buy: $29.99