Just last month I was asked by an entrepreneur to clean my windshield. It's surely one of the small investment businesses. Another wanted to pump the gas for me. That would have been even lower costs to get in that business.
Why not go with your business strengths? If you write music, do that!
Hi,
Dear Friends,
Want to know about top ten business, with small investment.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic