The Budget Breeding Bin Farm
The budget bin is basically two containers. The bottom bin collects the fluids that drains through the farm, the second bin is where the worms will do their feeding and breeding.
This bin is basically to breed your worms in, once the bin is starting to get full you can take some of the compost and re introduce them to the new bin. That compost will still contain some worms and their cocoons and so you will be able to start a new farm.
This is great fun project for both children and adults. Worms that are bred can be sold to fisherman as a great entrepreneurial project.