Mine has all sorts of shit in it. Mac keyboard shortcuts. Nautical terms. Cyrillic characters. Credit card verification codes. Phone numbers. Airport codes. Ionic component names. Names of my friends’ kids. A surprising amount of Z Specification. Anything I think it would be useful to remember.
How do you manage the data? Multiple decks or just one with everything? Do you directly use the app to add new phrases, or do you have some sort of automation / tooling on your phone or laptop?