My day to day life is pretty boring, but occasionally I'll imagine what I would need to do if I ever had to get out a secret message out where it was important

My day to day life is pretty boring, but occasionally I'll imagine what I would need to do if I ever had to get out a secret message out where it was important that it couldn't be traced back to me. It always ends up being something like, "Well, I could buy a bunch of raspberry PIs with cash and then go to a coffee shop that I never go to and upload the message to a gmail account that I'll only ever use once. Throw the PI away afterwards in a random trash can in town and make sure to wear gloves every time I touch it. Finally use some sort of encryption scheme or something so I can identify myself for repeated correspondences because each time will be with a different one shot email account." It turns out that this isn't some fanciful paranoia, but is in fact the bare minimum of what I should be doing if something like that ever came up.