A 6 metre arm made of 2,500 hands.
My housemates and I (King Zog) built a sculpture for Secret Garden Party festival. Working with INT Works the brief was to make something that you would interact and have photos with.
We sat in our sweaty pants for three days inflating 2,500 rubber gloves and then attached them to a scaffolding/wood/mesh frame. The gloves were arranged to read 'FEEL' but people didn't need any encouragement to run up and motorboat it.