If you want to start a business, you don't have to invest much money to make money. Sometimes you can start a business with next to nothing. Jacob and Susan D'Aniello's pooper scooper business is now a multi-million dollar franchise called DoodyCalls. But in the beginning, it was just them, a bag and a shovel. You might also consider hiring yourself out as a dog walker, errand runner, driver or computer consultant.