We take things with familiar smells, as well as Theron's stuffed toys, blankie, and his various noise machines (fan and white noise machine). It's a bit of a palaver getting everything loaded up, but it's well worth it to make him feel more comfortable. The first trip was difficult as he wouldn't nap and fell asleep an hour past bedtime (just as we'd arrived
) so we had to wake him up and resettle him, which took two hours!!
However, not to daunt you, the next day I tried to stick to our routine as much as possible, and I was rewarded with two long naps! Indeed, the second time we travelled, we pooped DS out so much that he napped really well, and we ended up bumping bedtime fully up till 7pm. It hasn't been there for a while!
Good luck! Come let us know how you are on Sept/Oct Mommies if you get a chance.
Katy