something i've been wondering, and may or may not put into my challenge, is the concept of selling trash. not in a bag, but in some sort of useable form. a company called TerraCycle
http://www.terracycle.net/index.htm even packages it's products in recycled soda bottles.
see, in argentina i bought some small glass ashtrays. they're too small to use, but i bought them b/c they were made from trash: the bottoms were from glass bottles and the artisan made the cigaratte rests out of bent 5 centavo pieces (about the size of a penny). i though they were ingenious, and still do.
thinking about the challenge got me thinking about those ashtrays, which got me wondering what i could do with some of my recycleables that could make me some money... hmmmm... perhaps i need to go rummage...