A role play activity to practice restaurant vocabulary, and also to revise the usage of "some" and "any". You will also need pictures of some of the food and drink on the menu (google image search).
Your students will be working in pairs (waiter/waitress and customer); each pair will need a menu and some pictures of food. Before you start, you'll need to put crosses next to some of the items on the menu, to indicate that the restaurant doesn't have any left. The customer asks the waiter (who has the menu) for the food in the pictures they've been given, and the waiter has to tell the customer when there isn't any left, and propose something else instead.
I did this activity with a class of adults and people seemed to find it fun. Hope it helps. :)