We thank Noelia Marchesi (a teacher from Chaco, Argentina) for sending this idea.
A good way to revise vocabulary is to play this Memory Game..
On a piece of paper (may be a notebook sheet) you draw or stick pictures related to the vocabulary you are teaching.
Show the sheet to the students three times, for three seconds each time.
The students have to write down what they see.
The student/group with more correct words is the winner.