Select medical professionals in your new area. They may not be permanent, but will be available in case of an emergency. Contact your pediatrician , dentist, veterinarian or other professionals to have records transferred. Consider putting your valuables , like jewelry in a safe deposit box until the move is completed. Be aware of closing bank accounts and have money readily available.
Travelers checks are always an option.
Pack a separate bag full of the things you may need in transit or for your first night at your new home. Pack a small tool box for last minute needs. Pick up dry cleaning that may still be at the cleaners. Have any house maintenance arrangements discontinued if it is in your name. Pack a box with important papers or documents you may need.