This is a truly great animation, but an even better speech. It relates just as much to our education of multilinguals at home as to the education of anybody else at school. Watch, and listen especially for the section on divergent thinking. Fascinating and potentially motivating stuff.
You can download this pdf of the treasure hunt activity I introduced recently here: Treasure Hunt. The first page is the key. The next page contains the clues. Go through the key with your child before you play. Make sure they know what is what. Have them cut out the clues and then you can play.