Sneakers/Tennis/Running shoes that have automatically pop/retracting heel wheels like Heelys
You lock your shoes together a certain way to engage the wheels which lock in place so you can skate around. When you’re done, you lock in the opposite direction which causes the wheels to eject and swing out to rest on the top of the shoe so it stays out of the way.
You get the ultimate tactical shoe that you can run and play sports in which also also double as Heelys when you need them to
Optionally, make the wheels electric powered as well lol