It is worth mentioning that you can do this as a sort of hobby like a home garden would be. As long as you're not making much money you would not be heavily taxed like most for profit buisnesses might. Not really worth doing it 'under the table', unless you were making a lot more money, and then there is a fair risk that you'd get caught anyways.Bottom line. If you're not a licensed business operator and go through the process for certification, trying to pick up some extra spending money "under the table" will cost you a whole lot more than you earned, if you get caught.