For the 2 days we were there, we build public sculptures in front of Nature Museum of Chicago with recycling materials collected for 5 weeks from 15 households. It was amazing. I've talked with people who pass by the sculptures, and a lot of them were also very concerned with the recycling program they have in Chicago. It was a very fullfilling experience. The weather had also be very blessing for it had been quite sunny but not too hot for the day.
I also met a really quiet but interesting artist who build children toys with cardboard or recycling materials