After watching the following clip of the Landfill Harmonic documentary, students decided to make their own instruments out of trash in the classroom.
If this is of interest, also be sure to check out the Brazilian artist Vik Muniz’s art HERE. He makes massive works of art all created from garbage. To give you an idea of the size, the pupil of her eye might be a tire. There is a film about it as well, called Wasteland, but I haven’t seen it yet, so be sure to preview before watching with children. He also does a peanut butter and jelly Mona Lisa, which is very cool!