https://motherboard.vice.com/en_us/article/vbkw84/this-guy-made-a-diy-device-that-measures-the-strength-of-your-bong-hits

Stoners get a bad rap. The stereotypical pothead is a lazy underachiever whose skills include eating an entire bag of Doritos in one sitting and curating reggae playlists, but this caricature neglects the bottomless creativity stoners apply to getting high.

Case in point is a DIY bong attachment that gathers data on how thick the smoke is from a bong hit. The device was made by Bradley Moore, an 18-year old pizza delivery guy and aspiring engineer, who recently posted the invention to r/stonerengineering, a subreddit dedicated to unconventional methods of cannabis consumption.