The real universal key: With "Key" by Suck UK you won't be able to open any doors, but bottles. But as we all know, cool drinks use to open a lot of doors.
With the Key bottle opener you won't be stranded anymore: The design by Suck UK looks like a standard key: beer, cola and everything else is opened if it only has a crown cap. This is how at least, you won't get thirsty in front of closed doors.
Suck UK produces the Key bottle opener out of nickel-reinforced steel, so that really every crown cap yields – as long as you don't lose your keys.