Do you have a DIY type on your shopping list? If you do, Instructables features a great roundup of open source kits from the guys at Make. What is open source hardware? Well the long answer is here, the short answer is that it's licensed source code and hardware that can modified and redistributed. Chumby, a wifi beanbag computer, is one of many examples.
So, what is there to choose from? Well they have kits that let you create your own MP3 player, iPod charger, or LED Readerboard. And for the more advanced, you can control anything using the Make Controller or Arduinio Diecimilla, which allows your computer to interact. So if you're struggling what to get that tech-geek that has everything, check out these kits that would surely keep your geek entertained for hours.