Comment Thought I recognized this - From 1983! (Score 4, Interesting) 49
Hardly a new concept. I'm looking at a Swedish electronics magazine from 1983 here (yes, they used to come already printed, on paper!)
There's an ad for miniature piezoelectric fans, no moving parts. The smaller version is 71 x 17 x 71 mm, so perhaps a bit larger than what's available today.
Remember that it was already a commercial product by then, and back in 1983 in Sweden the market was always far behind what was available in the USA, seeing how there wasn't really a huge free international market etc.