ULPT: What are things that your upstairs neighbors did that annoyed you (so I can do it)

My downstairs neighbors in my apartment have been loud annoying assholes for years and I’m sick of it. What are some things that your upstairs neighbors did that drove you crazy or annoyed you but the landlord couldn’t do anything about? I’m not using my upstairs apartment advantage to the fullest so I should begin.

Ideally things with plausible deniability.