Visiting family with kids in tow.

I've been visiting my parents for a few days with both girls. Husband has been working overtime getting something done involving emptying a stockroom in only a few days so we decided to get out of his hair. He will be joining us at his parents' on Saturday.
Traveling with 2 kids is a pain in the ass. They require so much stuff. I've got to bring a crib, a high chair, two sizes of diapers, sippy cups, toddler forks and spoons, and toys, not to mention the clothes. I have tried to reduce the ammount of stuff we bring but it seems to multiply when I'm not looking.