Ebay, etsy overflown imo. Buying and selling cars should work, if you are good at cars.
Some business ideas I've been thinking about
* Exporting cars to EU from US (once you know all the paperwork and requirements you can make at least 1000 usd per car)
* Bikes, buying bikes from a police auction(or any other auction), restore them and resell them for a nice profit
* Screwing new studs to winter tires (you can buy studs online)
* Being a "landlord" for an office-complex and renting rooms to small businesses for profit and with some sort of service included
... Got some more, just can't come up with them right now
