A set of 8 timber cubes, with 4 red matching 4 blue. Shake one, listen to the sound it makes and try and find the corresponding matching sound in the other colour. Have lots of fun with this, even add a blind fold for extra challenge. Each cube has pictures on the bottom (to afford confusion and for self-checking). Each cube is approx 5cm x 3cm and the whole set is 12 x 23 x 5cm