A tribute to Edward Snowden's badassery in blowing the whistle (see what i did thar) on the NSA's autocrat-candy surveillance programs.
This whistle doesn't actually make noise, but whistle noises aren't good for opsec, so it's a feature not a bug. You're welcome to change it though if you're a whistle expert.
Original concept by Ranjit Bhatnagar (http://moonmilk.com).
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/aeBnhYGCXuB
I've been able to print this without supports on NYC Resistor's Replicator 2. The little ball at the top should but cut off and squeezed into the opening in the chamber on top of the whistle. You can also use an airsoft BB, which you can easily find in most places except NYC because this city hates airsoft, cool park statues, and freedom.