The possibilities are endless. I’m still deciding if I’m going to make one (scientist hats are harder than pussyhats) or if I’m just going to get a t-shirt.
Brain Hats at Studio Knit (including how to videos, patterns, and more)
Read about the Stanford University postdoc in Bioengineering has designed and knit hats for herself and all her pals. Click through for patterns and other cool things.
This gal has collected some patterns and thoughts from others, including some lovely (and sort of tricky looking) double helix patterns. Ravelry has one of the patterns. ChemKnits (fabulous punny name) has the other.