I just got back form international travel with my 18m old. . .that flight is seriously miserable. And I'm ashamed ot say,. but TV saved us. My ds love, LOVES Signing Time and Baby Signing Time. I already had purchased a few of them, but wanted more, so I checked them out from our local library and copied them. (I know, I know, this is "bad", but I can't afford to keep buying them at $20 a pop.) I took my laptop with about 6 videos copied into the desktop and it worked like magic on the flight, esp when it got bumpy and we were supposed to stay seated and buckled in. DS pretty much refuses to watch anything but signing time, but some videos that yours might like are Sesame Street, Dora, Blues Clues. . .and I really recommend seeing if your local library carries them. Or maybe if some friends own some and will let you borrow?