Wrenches, black rubber straps with hooks on the ends, nice bungee cords, road signs. The other day a motorist beat me to a nice 1/2" chrome wrench lying in the gutter. He laughed when he saw me pedaling in reverse on the road to scoop it up. I was 10 seconds too late...what else...mattresses, one time a complete box spring in the bike lane...too many dead critters to count. The other day had to dodge a dead coyote that some municipal workers were busy scraping up. Found some tire levers that had bounced out of a seat bag, a 'tobacco' pipe, a Topeak multi-tool. Bonanza!