I built our compost bins using 5 old pallets that were out the back. I held them upright using star pickets (again, they were out the back) and secured them with some found wire.
You can see them behind the retro strawberry stand.
I lined the left bay with cardboard and then covered it with black plastic, leaving the floor open. The plastic was left over pond liner from the tip shop, so it was made from all recycled materials and it cost me nothing.I've only been filling it for about 4mths and got out 5 wheelbarrow loads of compost. I took off the top layer and put it into the next bay, ready to begin the next lot.
We have used foodscraps, newspaper, grass clippings, manure, seaweed, leaves (green and dried), dust from sweeping and vacuuming the house, lint from the dryer, hay from the rabbit hutch and dirt.
I spread it around the bananas -
And made a new garden bed for the garlic, another fruit tree and some herbs. I have put some potatoes at one end as well. I lightly dug up the ground, spread out the compost, some sheep manure and then topped with pea straw.
It's all being watered in by the rain as I write this.