Finding something to sell can't be that hard. Just trawl through eBay's 'most popular' and after deciding on a product go to a wholesaler and open an account, but you'll have to buy lots of product.

The other method, if you don't want to invest much is to trawl flea markets for gems that might sell. I have looked into a lot of things like that but too numerous to list here.

If you want a list of the 'Business to Business' trade forums I can post that but they'll expect you to invest tens of thousands too.

Try going to some of the craft clubs in your area and offer to sell their goods. You'll need to buy them first but if you are careful about your selections you might do well out of it. All hand-made crafts are original and very different from machine manufactured goods.