Creep out coworkers with a witches' brew

By Thom Leavy | Published Sep 23, 2016 5:42 PM

Halloween falls on a Monday this year, giving you an excuse to celebrate it in the office—with a mini fog machine that fits in a coffee mug. This project, inspired by a water-only fogger from product safety engineer and DIYer Brian Clarke, employs sound waves to turn distilled water into a spooky haze. The tiny cauldron gives you all the boil and bubble of a witch’s brew for a lot less toil and trouble.

This article was originally published in the September/October 2016 issue of Popular Science, under the title “Build a Fog Machine That Fits in a Mug.”

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