The holidays are approaching faster than you would think. What are you going to get for that special nerd in your life? How about something that will conserve power and make their gadgets run more efficiently? There’s a store for that, and it is called ThinkGeek. Here are just a few of their offerings:

Solar Powered Water Bottle Cap
Does your geek get into the great outdoors occasionally? If they do, this gadget will turn most commercially available water bottles into lanterns at night.

Kill-A-Watt Graphic Timer
This fully tricked out timer tells you just how efficient your appliances and gadgets are, as well as being fully programmable. If you don’t know what that means, don’t worry, your geek will.

PowerMonkey Portable Charger
There is nothing worse that could happen in life than the death of a nerd’s iPhone. NO.TH.ING. Gift them this backup and earn their eternal tech support/love.

For their full list of power-related and eco-friendly gadgets, see their site.