I am teaching my youngest students the Human Face vocabulary, so I've built a face to show them during classes. For now we are only using the brown hair, a pair of eyes, ears, eyebrows and a nose; but I have built hair and eyes in different colours, as well as ears, noses and mouths of different sizes. This gives me the chance to work the simple vocabulary with the younger students and the vocabulary related to Physical description with the older ones. I've also built different mouths so we can practice the Feelings vocabulary (happy, sad...).
Hope you like this idea! ;)