In an efficient market, if there is business that requires almost no skills, little investment but produce high profit, MANY people would have found it and all of them would been in it. The result-competition will squeeze out all the excess profit.

If you don't have any skill you can sell, how about learn something and acquire some skills for the future?

If you are really into business and not working on anything at the meantime, I suggest you to check out a basic economics textbook, it will help.