Another time-filling activity.
In teams (of however many you choose, but 4 students works really well), the students must nominate 1 writer and then that writer down as many words as they can think of to describe 1 picture at a time. The point is to elicit as much vocab as possible. It is up to you how long you leave the picture up on the TV for. I usually vary it during the lesson, allowing anything from 5 minutes to 30 seconds. Do an out-loud count down from 5-1 before "pens down!" Then ask them to count up how many words they have, go and check the ones who think they have the most (only accept 100% correctly spelled words) and then give the team with the most words a point.
There is a promise in the PPT of candy for the winning team, so be warned.
The students LAP this activity up for some reason. Good times.