Nextar 7" Mobile DVD Player with LCD Screen - MP1607
Compact and Convenient
This portable dvd player is compact enough to use almost anywhere or for any method of traveling.  You never have to worry about not being able to hear your video and it isn't a big ordeal to set up or take down.  The only thing I'm not thrilled with is that there is a fuzzy white ring around the outside of the screen that can be seen when the background is dark.