You should try to figure out what sells the most on Amazon or Ebay. Apparetly people are already buying it, so you'll be able to capture the ones that want to pay in BTC. I've heard people make miracles on Amazon by selling all sorts of things I'd never consider buying. But apparently there's demand...
if you want to work with amazon or ebay, you can be a reseller. There are many resellers succeed in selling things on amazon and ebay. Hard working will bring you many things. By the way, I think that open your own stores which accept bitcoin will actract many members here. Try to do that 
Its easy said than done mate. I think the market is already saturated with amazon or ebay products. Competition is very tough in this field. There are already big online stores who already captured enough markets for this one. I think its boom is around 2009-2011 and after that the market begins to be overcrowded. I think if you want to go this route, start first with a small target locally before branching it out globally. There are a lot of tools online to get help gather enough information of your target audience locally, its gonna be tough but if you have see that there is a demand, they test it first in a particular area.