We had a fantastic time as the Wizard of Oz family! Mom was the Wicked witch of the West, Dad was the Scarecrow, oldest son was the Tin Man, daughter was Dorothy, and youngest son was the Lion. All costumes started with a store bought.
One of my favorite organizing hacks I use on vacation, suction cup hooks on the side of the RV to hold our towels. Each towel color is assigned to each person so we know which one belongs to which person.