Guerilla knitting

Guerilla knitting (a.k.a., yarn bombing) involves sneaking into public spaces and changing the look of an area by slipping colorful embroidery and yarn stitches on things in the environment. For instance, a group of knitting ninjas will invade a place and leave tight-fitting cardigans on all of the trees, streetlamps and bus stops in an area. One artist has even taken to filling up Parisian potholes in the dead of night with her knitting. So, if you see a guy dressed all in black on the street at night holding a pair of knitting needles, you’re probably safe.  (via MentalFloss)

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