We're light packers. I can pack each of my kids into a small pilot case and a toiletries carryon or backpack. We don't fly though. We're only 11 hours from WDW so we drive. I bought my kids' luggage from Disney online, but they don't have anything similar to it anymore. It was a small set with a small pilot case, a carryon mini-duffel and a small backpack. (Think pre-school/daycare size backpack. Really small!) We use the backpacks for in the car stuff. Coloring books, DvDs, tablets. etc. The carryon is for socks/undies. The pilot case is for their clothing. Toiletries go in the adults' luggage.