That is lovely. Kids are such fun. The last time I was involved with a Sunday School class I was attending it and made an art of tying the teacher's (an older boy) shoe laces together, as in this was a weekly activity he was always surprised by but never managed to anticipate or prevent. It became something of an unbreakable routine for me. I will hope you never have a student like me. 

I've been baking up a storm today (it's cold, that makes me bake) and am now off to participate in the evils of commerce and then hopefully come home and wrap my hands around a Latte and work up the IC that has been writing itself in my head for days.