Russell
Use your "sweat equity" and "human capital" and perform jobs where your a W2 employee. Make money from that, and use that Capital to buy equipment and tools for you to do your business.
?
If you don't have capitol, starting a business will take all of what little you DO have. Yes, you can mow lawns or walk dogs.
Judy
something that doesn't need any, like maybe dog walking. Other than that, you can't unless someone like mommy or daddy will give you the money. If you borrow from a lender, you need 1/4 to 1/3 of the money yourself even if you can qualify for a loan.
Elaine M
Find something free you can sell.
Your craig's list has a 'free' section. Freecycle is available to everyone too. Curbside finds during garbage pickup days are free. MAKE something with materials you have on hand. Draw and sell the images. Write stories that can be published.
Jason
Capital is depend on the nature of your business. Planning is most important part of your business, Because planning make your capital.