Well not so much point you in the right direction as stop you going in the wrong one.
Most (well let's be charitable, many) of the home working schemes you see on the web are scams - they are designed to get you to pay money rather than earn it.
The more successful homeworkers build on one or more of the following:
a hobby or interest
skill or knowledge gained in a previous job
contacts from a previous job
Another thought is that trading on e-bay doesn't really entail selling - not in the sense you mean anyway. Build up a knowledge of some specialised item (say antique dolls but it could be anything) and capitalise on it.