I went searching on Ebay and found a 4.3" monitor that has a very good resolution. It has 1200X600 resultion. Of course the writing is very small (being a 4.3") but it is readable. It runs off a standard 12V adapter and I imagine I could get it to run off less (target would be 5v) but I havent really had the time to do the tinkering yet. Here is a link to the one I bought:
http://www.ebay.com/itm/4-3-High-Resolu ... 484002da98
The cost was $23.99 so not too bad overall.