The Picture above is a demo of the what one can do to help the garbage issue to some extent-by not allowing it to spill out into the streets and gutters. Pet Bottles can be used as handy 'bins' to collect chip packets, Al foils, plastic bags, etc. and then given to the ragpicker. Even if you do throw it out, it all compacted into one small area!
I read an article sometime ago in Herald where this project conducted in Guatemala was successful enough to generate bottles to make an entire classroom. Wish we could build a school like they did out there!
Try it out. All the best of waste.