Yarn bombing is a form of street art where yarnwork is attached to places such as lamposts, trees, bicycle racks, benches and more. Begun as an attempt to enliven and beautify cold, urban environments, it has grown into a full-on art movement. These aren’t just grandmas and bored housewives looking for a creative outlet and a bit of mischief. Many yarn bombers are fiber artists who connected with the whimsical style and slightly rebellious nature of yarn bombing. In many cases, the yarn bombing is done illegally, just like traditional graffiti and often under the cover of night.