seriously, we had about 30 abandoned vehicles around here for a while (we pull them in) and a few stuck in the sand like that but since the scrap market went up they have pretty much all been cleaned up.
I had over 100 good Mexican blankets and one summer we fed the pets on tuna and other food we would find stashed around. (found 50 cheeseburgers from burger king once) Now we are mostly cleaning backpacks, clothes, and plastic water/electrolyte bottles. It has been an "interesting" decade down along the border.