NOT a picture frame, but a magnetic picture board - even easier!
Put decals on a picture frame, and leave off the back.
Pinning this as an idea for a DIY Father's Day project.. Haven't thought of what yet though. Want to include "You're our favorite superhero" with the picture of him in front of Superman in Memphis. Also, "Thanks for the genes that provided these cray good looks, dad", and possibly "I'm as lucky as can be, for the world's best dad belongs to me".