Robert Lian, an airline pilot, got tired of dragging his rolling luggage through airports with his hands. He wanted to be able to use his hands while walking with bags. So in 2014, he invented My Hitch. It's like a trailer hitch for your body.
First, put on a belt or tight-fitting pants. My Hitch won't work if you're naked or wearing loose clothes. Then slip the plastic hook into the back of your pants, put the handle of your bag over the other end of the hook, and start walking.