I'm not a knitter. It's been something I've been meaning to get around to learning but there are always so many projects to choose from! Anyway, have you guys heard of urban knitting (aka guerilla knitting aka yarn-bombing)? You can find out more about the phenomenon on this site (in addition to lots of other sites around the web):
The phenomenon is particularly popular in the pacific northwest, but this is the first example that I've seen in the Twin Cities, This is a fairly humble piece of work compared to whole trees covered in "sweaters" but still pretty cool, right? I noticed it at the 46th Street Station while waiting for a downtown train.