parents back to school

Vana Vani has a great way of involving Parents in giving feedbacks and observing the kids and teacher in the class. My turn is on this 28th Oct.I have to attend Gattu Bhu's class and sit with LKG kids. Teacher has told me to prepare an activity and I am puzzled. What do I do? I dont want to do some thing simple...but nothing complex also. I want the class to enjoy and have fun with me.
should I do a Dance or should it be story telling? If story telling then what story should I tell ? The story should not be boring...it should be new for them also. Hmmmm
how do I narrate the story...in picture form or any other form?
How will gattu bhau react that day? will they like it? or will they detest it? Will they allow me to interact with other kids?
Dont know about any thing! Do I get some sweets for them. So that they like me in the class.
Lets see. May be story with pictures will be best.
lets see.