Travel Advice Wanted!

In less than 1 week my husband and I will be driving 1000 miles to Missouri with an 18 month old who doesn't really like long car rides an a 33 month old potty trainer along for the ride.

So I would like any tips you have to make the car ride more... sane enjoyable.

We are already leaving in the wee hours of the morning in hopes of getting 7 hours in before the kids wake up.

I also checked out "The first 100 episodes!" of  Spongebob from the library. I later found out that is 36 hours! Umm no! So we do have a DVD player with the kids favorite movies.

Other than that is there anything I can take with us to keep the kids happy or make the trip smoother?

Any crafts or activities I can make? Something you took on a trip with you that you were so glad you had? I'm all ears!

Thanks!