Here is a link to Leavitt Bros. list of most of the ETFs available.Just scroll down the page and you'll see: Index ETFs, Sector ETFs just under the Sector indexes, Commodity ETFs just under the commodity symbols, Currency ETFs, Fixed Income ETFs, Volatility ETFs and at the bottom Breadth Indicators on the broad market. Lots of free stuff on this site including educational stuff, charts, short videos on chart patterns etc,etc, Some of them are double and triple. You don't want to hold those double and triple ones for long as they will erode the way they are calculated. Kinda like an option but not as bad. And check the volume as some don't have a lot too. And they can all be traded even in most self directed trading accounts.

(If the link doesn't work here is the address. http://www.leavittbrothers.com/etf/)