Tree and debris removal would seem like the simplest with the least government intervention and insurance company hassles. No cop is going to bother you if you are cleaning up stuff.

Drive around the effected area and ask the people there if they want things cleaned up and stacked by the road, give them a price and go to work. No taxes (everyone pays cash) no fees or licensees to buy.

Any kind of auto will work for this, a few saws, rope, and some twine to bundle the brush up. Not a lot of tools needed.