Worth your time.

@WarnerCrocker I don't get it. Plastic, injection-molded whistles are cents apiece. You can buy packs of 50, and they get delivered quickly (not just from amazon, but also from sports and party stores). Letting your 3D printer "run 15 hours a day" is neither financially nor a time-efficient way to get whistles out to the public (even if they're very nice whistles).

Is this a way to feel like people are contributing something to a protest movement without having actually to go out into the cold?

@WarnerCrocker It sure feels like this is primarily to satisfy the "I've done something that only I can do" self-actualization needs of the owners of 3D printers, less than trying to help people in the most effective ways.

@funkylab I see your point. And I think you answered your own questions. I happen to admire the desire and effort to make a difference from a personal level, regardless of the level of effectiveness. Nothing, absolutely nothing, anyone has done on levels arguably more effective have made any difference so far.

@WarnerCrocker Not quite on board w/ "nothing has made a difference".
Luckily, every abduction even potentially stopped by alarming someone, maybe with a whistle, 3D-printed or not, has made a difference to someone *Very* much. Life-alteringly much. Awareness and directly helping neighbors has made a difference. Protest and in-person support has made a direct difference on places ICE can and cannot act just as they please.

I'd concur that nothing *done without leaving home* substantially helps.