Designed to take the load off family travel, the MiaMily suitcase features a top that converts into a ride-on seat for a child—complete with a seatbelt for extra security. When it's not toting a kid, you can utilize the suitcase's built-in bag hook for your diaper bag and glide through the airport with a little less weighing you down. It even acts as a portable adult seat in a pinch. With a tough hard-shell exterior, 360-degree spinner wheels, and a size that's roomy yet fits in most overhead bins, it will become (almost) as essential as your passport.