There is a demand for locally printed whistles for communities where ICE is or forecast to be.
If you are interested in printing whistles for your area, search “ICE whistles [your area]”. You can use either your state or major nearby city. If you are interested in printing whistles, but can’t find anything, let me know and I can see if I can find a local org you can support.
I mean, we live in a time when 3d printed guns exist, I’m pretty sure having a 3d printer and ordering filament is probably about as likely to get you on a list as ordering some whistles
But whistles are readily available and cheap, without looking too hard I can get a dozen from them at target for less than $5 with lanyards. Leave your phone at home, pay cash, take a bus or park in the next shopping center over or wear a mask like you’re getting over a cold and a baseball cap and you’re about as anonymous as you can get.
Can probably get them even cheaper if you shop around a bit, if you have a party store around you I’ll bet you can get a bunch there for cheap as party favors for a children’s birthday party goody bag or whatever.
At the end of the day everyone’s got to do their own risk analysis, but ICE is also pretty reactionary and stupid in their gestapo tactics, and people aren’t regularly shooting ICE with 3d printed guns at this point. The whistles probably (hopefully) irritate them though, and they tend to aggressively lash out at things that irritate them.