
Oh, I always think my experiences are the same as the rest of the world. Sorry.

So at many of the restaurants I go to, if it is one that expects you to 'bus your own table', they have a black heavy-duty plastic 'bus tub' on top of a cart at the edge of the room somewhere where you put your dishes into when you're done with your meal. Some local restaurants don't expect you to 'bus your own table' but they still have a bus tub out near the kitchen where you can still bus your own if you're so inclined. Maybe it is a West Coast US thing?
Not sure if I ever saw it in Oklahoma. I think cafes have this often.
So, neither of you have ever seen what I'm talking about? Hmm!
Other than the bus tub idea, it is difficult to think of a food related metaphor where things are being taken away from you. Usually things are given to you. Well, sometimes people 'send a dish back' to the chef because the meat is underdone or something .. but that doesn't have any good iconography associated with it.
Are there any other times you can think of when a food related item/items are being taken away from you or you're offering them up to others?
Okay, one answer: when offering servings of cake or pie or something to others ... still, not sure how to iconify that.
Most of the metaphors aren't really suited to food .. like the truck/transport thing, or sending mail, or a Star Trek transporter, or a rocket blasting off for distant locations, or things rolling down a conveyor-belt in an assembly line, or ...
When it comes to food-related stuff .. when is the focus on giving to others? If I'm a server, then that is always the focus, but an icon of a server's hand showing a tray of desserts would just look like someone was giving those to me. (Or am I just that self-focused?)

I guess a hand that is giving a piece of pie on a plate, with the perspective of the arm coming out from me and the hand/pie plate smaller in the slight distance .. that would give the effect of giving something to someone ... but still, not a super strong image. Hmm, very interesting.