The PiCO is an incredibly small titanium bottle opener by Pangea Designs that works in concert with a traditional split ring to provide the necessary leverage to open bottles. The company is currently funding production costs for the bottle opener via a Kickstarter campaign, and they expect to begin shipping in late May or early June 2015.
Using a sturdy split-ring for leverage, and placing your thumb on the opposite side of the cap to lift, the PiCO makes quick work of bottlecaps, requiring only a single tug to remove a cap. It may not be quite as efficient leverage as a full size opener, but certainly no other bottle opener packs this much prying-punch-per-inch! In fact, we find it does a better job than many other keychain designs that are many times its size.
images via PiCO
Thanks, Shelby DeNike!