CRAFTY WRITER'S TOOL: WRITING IT SMALL
I'm coming to the realization that no matter how small you write a scene, there's a director who will open it up. If you are trying to write to a budget, and you realize that you can shoot the whole thing from one angle, the director will want all the angles. If you want to stay small you have to write so it CAN'T be opened up. Two characters in an elevator. If you write a scene for some detective's office (two hander in a room), someone will move it out to the bullpen (two hander, 48 extras, set dressing). If you write a sonic grenade, some director will put all the glass shattering, 'cause it would be cool.
So it's not just about not writing the glass shattering or writing for the office only. You have to have a scene that won't be opened up...