Halloween is October 31st, and if you're looking to celebrate nano-style, here are some links for activities or costume ideas:
- The Science Theater play Nano Dreams and Nano Nightmares 
- The Science Theater play Attack of the Nanoscientist  has a nice Mad Scientist theme.
- Get costume ideas from the Intro to Nano  video.
- Make some polymer slime using the instructions on the Austin Children's Museum blog  (a bit of background information about nano and polymers is here )