Tinned question for Brits

[Kirstini]

Christian wrote: When we get British cruiseship-passengers visiting, 
they occasionally give me or the other guide some money, saying "for 
the tin".  Am I correct in assuming this is not meant as a tip to 
the guides, but as a contribution to the museum (there presumably 
being a tradition in 
British small museums for a tin inwhich visitors donate money to the 
museum)?

                               ***

It's for you, I would imagine. I used to waitress, and was told 
frequently when tipped, mostly by older customers, "take this for 
your kitty" - ie the staff kitty, which I assume is a Scottish 
version of the same thing. Although British museums are usually 
free, and you make a donation at the end...
Oh dear. haven't helped at all, have I?
Kirstini