The first night of Hanukkah is less than a week away, and the engineers of Technion, the Israel Institute of Technology, are getting ready with their unnecessarily complicated menorah lighting system, in which a Rube Goldberg device triggers a robotic arm, and nitroglycerin provides the fire.

Want to give your home some nerd cred for the holidays? Good news: geek decorations are better than ever — but some terrible crap is also being marketed to nerds. We rounded up the best and worst geek holiday decorations.