Bottle opener - key

Looks like a normal key - opens bottles, however, and not doors.

The best bottle opener is the one that is always in your pocket. Impress your friends while drinking outdoors: open bottles with your keys... Or what looks like a normal door key at first glance, but upon closer inspection, the working end is actually a bottle opener. If you always forget to bring a bottle opener to a picnic, you will now never leave the house without one, unless you forget your keys, of course. A modern design classic in its own lifetime! Compact, subtle, and incredibly useful.