I had a piece of pipe with wire mesh in the bottom, the bottom was taped the end of a coke bottle. Cram comfrey in it and place jamjar on a string on top full of lead! Little lid on top to stop rain getting in, result was a black tomatorite type solution that I watered down, undo coke bottle lid with watering can underneath and free comfrey juice!
But it fell off the wall and smashed the jam jar! ???
So now its just the sack in a butt job! ;D
The latter stinks though! :-\