Speaking of used oil.... The gas station here used to let anyone drop off used oil as long as they poured it into their tank and didn't leave empty containers and garbage laying around... Well they started charging per gallon of disposal. So i was stocking up on used oil for a while, i would refill the empty five quart jugs after an oil change with the used oil.
Finally a week ago i hear about a guy who bought a waste oil burning stove for his heated wood shop, so i go ask him and he asks me how much you got, and i say oh about five gallons, he says darn i was hoping you had like 100 gallons to top off my barrel but i will take as much as you can give just leave it by my shop door if im not around. So there, i have a new place to dispose of my used oil and its benefiting someone directly with free heat.
Now the next barter he is coming to get the old oil tank in my basement, converted from fuel oil to electric heat a couple years ago.