ADULT: The idea here is to either draw or find in a magazine 10 pictures of the same thing. You can also find one of something and photocopy it 10 times.
Some ideas:
10 ducks
10 cats
10 balls
10 houses
10 shoes
10 cars
10 spoons
10 cups
10 boys
10 girls
Once you have all of the cutouts, drawn, cut out of a magazine or photocopied, mix them all together and set them on the floor.