Deviant artist Smapte has a fantastic collection of geeky and sci-fi amigurumi. If you’re not familiar with amigurumi then we’re talking about cute crochet figures.
The pictures below are just a sample. Highly recommend checking out Smapte’s Deviant Artpage and soaking up the rest of the goodness. There’s more Firefly and Tron behind the link.
Tifa Lockheart from Final Fantasy VII