I’ve seen worm farms selling in the hardware shops for anywhere up to $100. It’s a great way to turn food scraps into highly nutrient soil and also breed lots of worms for the garden.
I bought a bunch of these plastic buckets a while ago to store parts in. They were used for ice cream by a local shop and once emptied, they had them for sale for $1 each. So this is the $1 worm farm.
Drill some holes in the side.
Put some newspaper on top of the scraps to keep the moisture in and the lid goes on top to keep the rain and pests out.
It’s only small enough for one person but when it’s full you can simply pull it out of the ground and dig another hole for it. You can take some of the worms from the old castings to start the cycle again. You could also have a few of them running at the same time to spread your worms around.
Note: Having made the first one, I suggest drilling the holes in the side before cutting off the bottom as it makes it a bit easier to drill. I’d also put a few more holes in it.
And I can confirm that it definitely works.