Here a few geeky DIY projects!
Star Wars Amigurumi patterns - Amigurumi: I have no idea what it technically means, but it seems to be associated with cute. And these crocheted Star Wars guys are about the cutest things ever. I do not crochet, but I read a few reviews of the patterns on Craftster that said the directions are clear as can be! If you want to make a few for me... I won't object. ;)
Cross stitch patterns and kits from Bombastitch - This great Etsy seller has a big selection of geeky cross stitch patterns and kits. Kits are the easiest way to go, but it's not much trouble to pick up the cross stitch basics from your friendly neighborhood craft store.
GeekDad - Geeky Projects for Dads and Kids - Despite the title, it's actually not just for dads and kids. It's for grown-ups, parents or not, male and female. This looks to be full of cool crafts and among many things you can "ereate a customized comic strip or your own board game."
Star Wars pop-ups from Robert Sabuda - This might not be for presents, but they would be really fun to use for mini cards or even tags. He has instructions to create lots of characters from the Star Wars universe.
Craftster - Craftster is your guide to amazing projects. You can find inspiration, tips, and sooo many tutorials. I've seen plenty of geek-themed things in their forums. Besides browsing through their site, I recommend looking them on Facebook and liking the page for the latest features.
Felt Monsters! - Monsters are cute. This is a great step-by-step tutorial on making felt monsters. You can alter it and make zombies or bacteria or almost anything.
If you have any ideas about what to make, please share them in the comments!