Thank goodness---I woke up this morning eager to get going on the proposal. Sometimes (but not always) it goes this way: just when I feel most mired in procrastination, my energy pops back up.
Here are a couple neat pieces of art about garbage:
I. I like this one because of the rag-picker's dogs, who, unlike the woman, look like they're in good health. I suppose they gets lots of juicy garbage to eat?

"Arrested Rag-Pickers in City Hall Park, New York, sketched by C.G. Bush", Harper's Weekly, July 6, 1867
---from the Library of Congress
II. These bits of rulers cast up by the sea are as beautiful in their way as beach glass.
Above: "28 Objects that Measured the World," by artist Steve McPherson
From the Anchorage Museum's exhibit "Gyre: The Plastic Ocean":
"Steve...combines and arranges found objects from his local coast, with a summary text that gives a potential identity and history to the collated flotsam and jetsam."