Currency Insurance

One idea has popped up in my mind regarding the Currency Insurance. Usually the currency insurance is meant by a policy which protects the agreed future exchange rate which is being fixed in the current period against the cost of the premium.

But what happens to those currencies which are destroyed/lost due to the fire, vandalism or any other calamities? What happens if my son destroys a bunch of $ unintentionally? Is there any insurance to provide the coverage? If so, what about the cost?

I must try to find out the answers. If someone provides answers that will be a great help!