Oooh speaking about collections -
I used to have collections of Starbucks bottles from different parts of the world (bought one whenever I traveled).
I also collected tequila bottles as I worked part-time in a Mexican restaurant when I was young.
All those stopped when I decided to have a more fluid lifestyle which had me moving to different countries to work and live in and moving was such a hassle.
Now I just collect flight ticket stubs. (Isn't going really well with the migration to e-tickets via your phones as well as COVID now)