Music & Performance
Making a noise on purpose. Instruments and performance hobbies you can start in a small flat without your neighbours filing a complaint — mostly.
7 hobbies

Acting
Community theater: where your day job disappears and you become a moderately convincing sheriff.

Ballroom Dancing
Learning to move gracefully with a stranger, which is somehow less awkward than it sounds.

Improv
Making things up out loud, with other people watching, until it stops being terrifying.

Singing
The instrument you already own, if you can get past hearing yourself on a recording.

Swing Dancing
Jazz-age dancing for people whose only current cardio is walking briskly to their car.

Ukulele
Four strings, a forgiving learning curve, and a sound that is physically incapable of being menacing.

Voice Acting
Acting with your whole body reduced to just your larynx, and somehow it's harder, not easier.