My grandmother used to send to my sisters and me, and to my sons years later, the most adorable greeting cards on Valentine's Day, St. Patrick's Day, and on Halloween. She always enclosed a crisp dollar bill in each card. The following images are all reminiscent of the cards my sons and I received from my grandmother through the years. If my grandchildren lived more than a mile a way from me, I'd consider doing the same.
Happy Halloween to you!
Credits: All images from Art.com.