come up with a business idea to make me $300,000 a year. it should stay within the following parameters:

not require an upfront investment of more than $100
be legal
not involve sales or convincing people to buy the product, i don't want to have to call people, cold call, or do sales at all myself, or have to hire someone to do sales in the beginning
hard for others to replicate/copy/steal from me
List out specific steps to get this business started, running, and profitable. i should be able to take these steps and run with it without any further questions.