Consider raising worms to sell as bait to fishing shops. The worms can be raised in tubs, bins, or barrels and you could be harvesting your crop in just 90 days. But it isn’t just the worms that have value, since the soil left behind is full of worm casings and provides some of the richest sources of nutrients for your garden.This could bring in a secondary income stream as compost for gardens. Not only is it an easy, low-maintenance way of earning more from your farm. It is also completely eco-friendly and as such opens your farm to another type of customer.