What's a good 'travel gift' for Christmas this year?

My wife and I will be taking about a four hour drive Christmas morning and staying the night out of town. We’re giving each other a small “travel” type of gift for the occasion that morning, but I’m stumped on what to get her. Magazines and short books seem so typical. So I’m tapping the collective (and you guys don’t untap until this is answered).

Put on your santa caps (or elf hats, if you’re into that sort of thing) and help me pick an awesome travel type gift (or gifts). My range is about 30 bucks. Thanks!