Here are some of the one's I can remember.
-urine will cure an ear ache/stopped up ear
-tobacco will cure pain from a bee sting
-burnt (used) motor oil rubbed on a dog with the mange will cure it
-put kerosene on a cut to promote healing and stop infection
-put salt directly on an ulcer
-death's come in threes

I could probably think of a lot more if I put my mind to it.