[tragomaskhalos]

OK I'm now imagining a 19th century job interview when the candidate is given three weeks to 'devise and construct a steam-powered apparatus capable of emulating the popular parlour game based on multiples of 3 and 5'. I'm sure modern steampunk enthusiasts can be nerd-sniped into having a go !

[seabass-labrax]

Connect to the main shaft a basic steam engine and two independent cogs of ratios of three and five. Then attach a cam to the side of each cog and have it press down on a stamper for output. Sounds easier than JavaScript!