Three one metre square pallet jobbies!
Ones filled with a mixture of well rotted horse muck which I collected and well rotted compost, which I made. This is the heap I'm drawing from at the mo. The middle one is rotting away nicely and the other end one is going to be filled with leafy woodchippings we get delivered from a local tree surgeon.
The way the weather is just now, the leaf litter bin should be ready for use in a month or two!
Also have a large bin full of rotting comfrey leaves for liquid feed.