Buy and sell stuff. Christmas is coming up, you could package together different things and sell them as gifts. Easy and cheap to test with Shopify and some Goo

Buy and sell stuff. Christmas is coming up, you could package together different things and sell them as gifts. Easy and cheap to test with Shopify and some Google, Facebook, Reddit, Stumbleupon ads. When you do that, you're bound to notice lots of niggling problems about selling stuff online. Then you can make something that solves those problems, and sell that to other retailers.