It'll be somebodies sandwiches.
I was travelling passenger on a northern 333 a few weeks ago. Just gazing about I noticed a wire that seemed to be coming out of the bin. Curiosity killed the cat, so thinking it might be a bit suspicious, decided to look closer. Some brainbox had decided it was a good idea to tie the bin lid to the bin with a piece of electrical wire to stop it being used as a weapon or going missing I assume.
You couldn't make it up.