ESL demo lesson for international kindergarten in Shanghai China ?

I have to do a 30 minute demo for an international kindergarten in Shanghai. The students are 4 years old. I have no idea what to do in the demo. PLEASE if possible send me a demo lesson plan suitable for their age or some ideas and games I could play. The school didnt mention if they have materials for me to use. I can possibly get my hands on some teaching materials. Please answer this question with an organized breakdown of the lesson. THank you soooo much. I hope this can calm my nerves.