Lost for a warmer first thing in the morning? Well, with zero preparation you can walk into the classroom, ask students to give you ten words from memory from the last lesson, which are then put onto the board, then in groups of two, they must put the words together in a sentence that makes grammatical sense. Give marks for the most succinct, the funniest etc. For example,
Example sentence: The penguin thought the cabbage was holy. It therefore assumed it was ready to fill the famous church with its perfume.
You can adjust the difficulty level of the exercise by giving students a time limit, or saying they only have to use 3, 4 or 5 words, for example.