Recently there was an 'urban knitting' thing at the Govett Brewster art gallery. A massive scarf was knitted, all in white wool, in a variety of textures. It was made by who-ever was passing and wanted to add a row...or two...or three.... It was then auctioned off. My ten year old, Ella, was very excited about adding her part to the scarf on a wet Sunday afternoon. We spent ages there while she added her row (80 stitches across).
The gallery also had an urban knitting/graffiti knitting afternoon, where people came and knitted around/over parking meters, fences, doorhandles, lamp-posts etc. That part of town is a pleasure to travel through at the moment...the knitted flowers in the wire fences and the small odd parts of knitting you find in unexpected places are just a delight and make my day!