LOL'd at the DME comment. you probably already read Mousecatraz, but it's a quick read that I think would be good for the airplane. Maybe one of the Imagineering Field Guides?
The Mouse Trap books. They're entertaining. I really like Dream Factory (I can't think of who its by right now) it about the characters go on strike, so a bunch of high school & college kids fill in. It's a super easy read cuz its written for middle schoolers, but its still good.
Thanks Kristin and Kristin for the suggestions! And yeah, you know that thing about DME is 100% true.