These are great
First came the Superballs in San Fransisco:
Then the Paint in Glasgow:
Most recently came the attack of PlayDoh bunnys in NYC (the whale tail was the best) :
Whats next? Not sure, but Sony was spotted in Miami creating “Foam City”. Watch below and figure it out. Looks fun though. This site has a small description of the idea behind the commercials, and this one has great pics, and this blog talks about the commercials too.