Divide the class into two, three or four groups.
Collect different things (approx 10 to 15), then hide them in the box. Call one group to watch, give them 3 minutes, then tell them to sit together at one of the class corners and write all of the things on the paper. Do this with other groups too.
The teacher should give time to the pupils, either five or seven minutes, then collect the papers and make a collection together with the pupils. This is a great way to encourage the children to co-operate and builds team spirit.