Was waiting to board a plane at Ben Gurion Airport. Boarding was by zones, which is a sensible idea but usually involves some confusion as to which zone is up… PA announcements can get drowned in the general hubbub.
So this time, they had a young lady announce the zones at the top of her voice – and for the benefit of people farther away she waved a large sign with the zone letter on it! In fact she had the zones on the pages of a large ring bound notebook that she could flip through.
Simple, smart, and foolproof!