I wouldn't make him pay for it or make him feel too badly. But, even accidents can cause harm that may need to be repaired. I might have him give some extra help around the house, a small 6 year old size chore or two, in order to give back to your family after damaging the stove. Restitution not punishment. It might help him feel better about it knowing he did something nice after the mistake.
sahm to Maxwell 5/4/12