Since the inside of our crockpot broke, I now have the outside part in the backyard as a planter. It's got some little flowers in it and they are doing well. It's an old crockpot, so it already had a small hole in the bottom center.
I also tried to convert an old bar-b-quer into a planter this past summer, but since it was soo hot, I think the metal from the pit killed the plantling. I might try again this fall with a different plant. We shall see.
I've seen pictures of old boots with plants in them--thought they were cute. Have you repurposed anything in your garden?