|Draw in English|
Have some of your student finished a task way before the others?
Ask them to draw in English!
The only rule is: "You can only draw what you already know how to say in English". I don't ask them to write the words, but eventually they all end up doing that to prove to the teacher they DO know what they're drawing (even if they misspell it...Oops).
On the other hand, there might be a "Bruno" on a class somewhere who decides to draw a shark, because he's mad about sharks and he can really say the word SHARK with all his teeth ;). However, Bruno accidentally draws some seaweed on the bottom of the ocean as well...Oh, Oh... Well, he's just given you a great opportunity for some vocabulary work ;) Grab it!