For little or no overhead you could start by becoming a Concierge.
This is kind of like a consultant. $20.00 can get you stationary and you can buy potential clients a cup of coffee to set up initial contracts.
As a concierge you will get people (or refer them to) the services they want and they will pay you a fee.
Later, if you want to invest money in a brick & mortar shop this option is always available.
You could get into providing luxury items which can bring you higer income.