Books. I never leave home without a book (there's one stuffed in my purse if we're going up the street to the grocery -- you just never know if you might get caught in a traffic jam).

I tote the books in my carry on bag (occasional overflow into husband's bag for the guide book[s]). Invariably I add a couple more while we're traveling. They're wonderful souvenirs!

I'd add husband and camera, but we're only allowed to chose one and the husband is pretty much a given to tote the extra books and camera.

Happy traveling and for those of us that are fellow bibliophiles, happy reading along the way, too,

Peggy in Ohio