I always thought that the best hobby is the one that brings you income. Your case, OP, with your friend, could fit this idea more than ever. If you have some passion for creating something, if you are good at drawing, or if you are engaged in other creative work, you can always offer your products for sale. Isn't this entrepreneurship and, at the same time, a business from which you get pleasure? I know that such things will always be valued much more than what can be done on a conveyor belt, since they will be created qualitatively and with love, something that everyone lacks in our very fast and hectic lives.