I use this as a warm-up to get students thinking in the target language. Blow a stream of bubbles and call on a student to recite a list of predetermined items before the last bubble hits the floor.
Some of my lists have been:
objects on a beach
verbs associated with school
what you did last weekend
what you're doing in Spanish class
The ideas are limitless. In 5 minutes time, I've had other students beg to give it a try.