Already left my water bottle on the train

I'm tired of being me.

And of course even though the train is probably 100 yards away, there's no way I can get on it, stuff will (in theory) be brought up to lost and found tomorrow.

No one offered to take a report (I was sent to someon who 'may have a key' so I talked to two people) or something so I could claim it in advance. I guess that's my responsibility to press if it were important? But there doesn't seem to be a process.