If you really want something that is portable, for your future relocation, consider either something that can be done completely online, or will work both online and off. Build it right, and you can keep many of your New York clients satisfied even after you relocate.

And, do it right, and you can target SC prospects before you move their.

I'd definitely look for an opportunity with no inventory requirement, so relocating the business doesn't also mean product to be moved.

Since you are already looking at working with existing businesses, why not investigate the promotional advertising industry. It meets all the previous criteria and offers the benefit of a great repeat sales factor. Sell an order of ink pens, coffee mugs, or calendars with a business imprint, and expect to write that order again at least once a year.

The inventory ships direct from the supplier to the buyers final destination, so you don't have to deal with delivery either.

This industry is a $20 Billion market in the US, and has been my full-time career since July '07, after 3 years of part-time sales.

Good luck at whatever you choose.