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I don't know if it as been tooted here but i found this video of a A Swiss wind-up fan from the 1910s. A spring motor provided a light breeze lasting about 30 minutes These were built for tropical countries and areas without electricity.
@dithr I have an Edison cylinder player, and it works effectively the same way, but with less duration.
@dithr We need a 3d printable version of this !!
#opensourcehardware
@dithr Similar handheld windup fans existed... as toys... in the 1960s when I was a kid.
@dithr That is so cool. I want one!