Cheap place to play instrument?

I’m looking for a place to play an instrument at. I don’t need anything fancy. Basically just a box where I can make noise. I’ve looked at previous threads and checked out the prices of some studios like noah studios and studio penta and unfortunately it’s just too expensive. I’ve seen karaoke booths suggested and that’s also pricy. The instrument is a tin whistle ( think of a louder western flute in terms of volume ).

Would anyone have any suggestions? I’d rather not play it in a park or under a highway because it’s difficult to get to but most importantly I don’t want to bother anyone.

by SheepeyDarkness