One of my side hustles is cutting trees, I bought 3 chainsaws for a good price from a crack head and the chainsaws were almost brand new when I bought them. You could make a lot of extra money cutting and trimming trees, the only thing is that it's dangerous and you could get injured if you do something stupid and you also need a work truck.
it's not a side hustle that everybody can do, because you gotta have the experience to maintain the chainsaws and you also need to sharpen the chain of the chainsaw when it goes dull. You also need those heavy duty ladders.