I love all the suggestions. I hope I get to use them one day. Another simplistic identifier I thought about. Take the brightly colored tape & put your initials on all sides. Don't put your name!!!! Or maybe a favorite sports team or hobby?
In the past, we used the ribbon on the handle, but if the handle is turned away from you, you have to straighten the luggage sometimes to see it. That can be annoying & taxing on the back. I vote for something that is removable on all sides. Have fun...I am very envious.