A Quik Stik.

It is in my humble opinion the best tire tool ever invented - as long the tire bead isn't too tight against the rim channel and you can't get the lip under the bead. This tool's advantage is that it's designed to not only not pinch the tube during removal but to allow the user to quickly unseat the bead by pushing or pulling the tool around the rim circumference. When you do hundreds of tire changes per year, the time savings (and tube savings) is appreciated.

Alas, it has been discontinued by its maker. Some of us are hoarding curating collections of remaining ones, and re-grinding notches in ones that are inadvertently broken (it's very strong, and stronger than nearly all other plastic tire levers, but not infinitely strong).