This machine was designed to create smoke rings. But not at random. No, it was designed to spit out smoke rings that form letters, allowing it to spell things out with smoke.
I'm not sure how practical this thing is, as it shoots out one letter at a time, vertically, that's very difficult to read. But despite this fact, it's set to read out the entirety of Cervantes' Don Quixote, letter by letter. I'll just take the Kindle version, thanks.