11 cheap gifts guaranteed to impress science geeks

http://dvice.com/archives/2010/12/11-cheap-gifts.php

'11 cheap gifts guaranteed to impress science geeks'
Most of the things on there are actually pretty amazing. Especially AeroGel;

It's also the best insulator in existence, which is why we don't have Aerogel jackets: it works so well that people were complaining about overheating on Mt. Everest.

And the Ecospeheres;

 Inside these sealed glass balls live shrimp, algae, and bacteria, all swimming around in filtered seawater. Put it somewhere with some light, and this little ecosystem will chug along happily for years