Try out the new game Snail Mail from Sandlot Games. My friend Andy worked on this game, and I *almost* got my act together and did the voices for the enemies. Next time I will record the voices the night he asks for them rather than a week later.
If they follow thru on the Playstation Suite with a big enough library, that could be pretty interesting. The Kindle model is way to go - do your own device, but get the software on as many other devices as possible.