Some phone cases have an attached pocket. Barely holds 2 cards, but it’s probably enough to slip in a student ID, travel pass and squeeze in an emergency note (money).
I find that very lope sided as I prefer to have a balance of stuff on both sides of my trouser pockets.
If and it’s a big if, I did “accidentally” unsubscribe something that I later want to resub. I’m fairly certain my inbox/spam is chock full of them anyways.