Based on an Canadian example some guys have organized a cool flashmob in Budapest. The idea is brilliant. They called together about 200 people and all of them went to a Mall where they left an empty bottle on the ground right beside the recycle. The instruction was:
As soon as someone picks up the bottle and put it into the recycle all the 200 people shall start to applause. See the result on the video. (Ignore the Hungarian speech, the show is enjoyable just by watching, too)