Here's the latest mechanical creation from Benjamin Cowden. Titled The Dandy's Suitcase, the machine will mix you the perfect gin & tonic after a little bit of setup.
From the YouTube description:
This cocktail machine was a commission project to produce a device that travels in a suitcase and pours a Gin & Tonic. It features a single crank that drives a worm gear. On the axle with the worm gear are two yoked cranks that activate the gin bottle, then the tonic bottle. The yokes have dwells that allow the bottle to return to their start positions and stay until the next round. Finally, a Scotch Yoke on the axle pulls a lever that pushes a garnish of sliced cucumber into the waiting cup. All elements of this machine that contact the ingredients are food grade stainless and silicone.
See more mechanical creations by Benjamin Cowden on his web site.