Everyone has their own way of doing stuff and I'm sure you guys all have some little tricks you use whether it be for installing, building, tuning, etc. Would be kinda cool just to see what everyone does.

I'll start....when something is rattling but I can't tell from where, I plug my nose and keep my mouth shut, then I try to exhale. It cuts out all of the bass and you can clearly hear things rattling. The same thing happens when you plug your nose while you sneeze, or if you yawn.

Pressurizing your eustacian tubes, I gotcha