Last Minute Request - Cancellation Mark?

[3beans]

So not one of those people who plan ahead...

Have a son on the verge of dis-believing Santa. Would like to make the letter from Santa a little more realistic this year by adding a North Pole or Santa Claus cancellation mark for the envelope.

Is there a designer who could whip one up for the store mighty quick? Or if there is one in there already, could someone point me in the right direction?

Thanks!