Do not be surprised if you see artist Ben Wilson kneeling on the floor and making small works of art of flattened chewing gums on the sidewalk. So far he had done more than 10,000 works, mostly in the UK and some parts of Europe. At first he warms bubble gum, then adds varnish so that gum hardens, and then applies acrylic paint to create his own designs. This way, Wilson circumvents the UK prohibition of painting on sidewalks – because he doesn’t paint on the sidewalk, but the chewing gums glued to it.