My friend Christy on Twitter shared this link to this fantastic knitted irrational skirt! Using the digits of Pi, and working the rows using Fibonacci numbers, this skirt is so cool! She also did all of the prime numbers on the skirt in blue- how much math geek can you fit into a project?
Its worked as a long strip and then stitched into a spiral afterwards if I read the description correctly. Seriously, I absolutely love this, though I think its a bit much for me to take on right now.