The hinge issue really gets me. I need to tighten the ones on at least five lockers, two or three times each trip. Simply opening and closing a locker once causes the screws to loosen. I'm going to try wrapping the screws with plumbers PTFE tape.

Sorry to hijack this thread :-(

Spent a couple of hours last week with a tube of Araldite epoxy, removed & replaced every screw (including the bathroom door) one-by-one with a dollop of resin applied beforehand. Just hope a hinge never fails or I'll have to replace the entire door!!!