I keep running across Yarn Bombing--read a facebook post about it the other day, then found a BOOK called Yarn Bombing at the library!
Wikipedia says "yarn bombing is almost exclusively about reclaiming and personalizing sterile or cold public places."
I like the idea of the rather domestic art of crochet or knitting being taken to the streets and used to make people think. Like that tank, above. I'm imagining a little lacy cannon-cover, or a doily affixed to the end of a cannon . . .
I'm VERY intrigued, and I think I'll try a yarn bombing project, though my boys are horrified at the idea . . . more later :-)