There you go, all the memes in one shot (no pun intended).
A very large-ish armoured snowglobe, with fingerprint, retina scanner and fiendish set of questions eg "A ship travels at 10 knots, the river current is 12 knots (20 in the rainy season) how long does it take to get from Amapa to Manaus if you leave on February 19th, about teatime-ish?" etc.
Inside is the snowglobe is a lot of that fake snow, a miniature Charlton Heston banging on about "cold, dead hands" and several guns with little floats on them to achieve neutral buoyancy, only one of the guns is real.
By presenting the correct fingerprint, retina and answering as few as 97 questions correctly the actual working gun is presented to your hand, probably.-- not_morrison_rm, May 25 2014 Or a slightly less complicated version Snowglobe_20Shooter [FlyingToaster, May 25 2014] NEWS FLASH!: [not_morrison_rm] found beaten to death with large armoured snowglobe. Police suspect drifters.-- AusCan531, May 25 2014 The drifters probably not up to it these days, certainly if we consider the founding members, eg Clyde Lensley McPhatter (November 15, 1932- 1972)-- not_morrison_rm, May 25 2014 random, halfbakery