Being computer literate will help you handle several dozen clients all at once. You may need some training if you are not a CPA, but software programs today make it easier to walk through even the most complex tax situations. Let's say you have some land and you love to garden. You enjoy working outdoors and are tired of working inside a building for a living. Gourmet stores all over the country are looking for the unusual in the way of plants and edible flowers.
Herbs are also popular.
You can even sell the crops you grow at the local farmer's market on Saturday mornings. If you already have the land and the desire to do this, why wait. Start it part-time if you want, but you may find dozens of outlets for your goods if you are up to the test. The risk is bad weather, of course, but it's a chance worth taking if you love gardening. Commercial building maintenance people are often on the lookout for good help in this area.