I just love geeky crafts! I love how creative folks get about their geeky pursuits.
Like these lovely and amazing scarves:
They're the emission spectrum of different elements. You might have to explain it to your non-scientist friends, but even if you don't, they're still pretty!
And speaking of knitting and science:
It's not exactly a scarf, but this is one of the coolest things I've seen in a while:
A beaded necklace-wrap based on the Doctor's scarf? Yes, please!
And for those with wee scientists in their lives, check out Verdant Violet's etsy page, where you'll find all kinds of greatness: