Pack for a week, stay for a month

Woo hoo! Our flight out of Austin to fly to Kiev, Ukraine is in 4 days. All the wheels are in motion to keep the home and pets cared for with the housesitter, finances squared away, etc. etc. Now the real fun begins in getting packed for the trip. Packing for a long trip like this comes down to the smallest common denominator. What can we fit in a van with a family of seven on the way to the Kiev airport to fly home! Not how many bags we can take, or how much weight the airline will allow, or what our biggest suitcases are, or even can we fit in the car from the Kiev aiport. What will fit in the car to leave Ukraine with two adults and five teenagers! We have been waiting to get to travel and the day is fast approaching. We couldn't be happier to finally go and get our new family members!