> Here's one I don't know how to solve: at work some folks take meetings in the bathroom.

Not legal but there’s a technical solution that’s worked in the past: pocket cell jammer. Range isn’t very far but it’ll work to boot callers a stall away or a booth away at a diner, etc. Only need to run it a few seconds to drop a call.

Do want to stress these do see enforcement now (in the US at least) but a low power pocket one used occasionally is unlikely to attract attention. It will be noticed if it’s higher power or runs in a regular location. Fines are severe and risk jailtime but hey it’s your life.