Emergency Whistle
thingiverse
A whistle is universally recognized as a distress call. This tiny little whistle can easily be attached to a zipper, key-chain, or any other object. So whether you get lost in a forest, need help on a ski slope, or are nervous in a dark alley, this is a great tool to have. *Note: the whistle is turned sideways in the STL. the bottom should down when printed.
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