I went to the shops...

A simple little warmer which usually works surprisingly well to kick off a lesson.

You all know this one:

"I went to the shops and I bought..."  first student completes with any item they can think of, for example, "a book".  The next student in the circle says:  "I went to the shops and I bought a book and some cheese", and so on around the class.

No notes can be used to help remember the sequence, and you can be as strict as you like about hesitation and how much time they get to answer.  Forget an item, and the student is out, winner is the last player to remember the whole list.