Buy 1 8x8 pad of various solid papers, adhesive and decorative self adhesive border.
Now find a photo or two that would be appropriate for a card front.
Scenery, still life, animals...
Now crop the photo, single mat, and layer on top of border that has been stuck on a folded 8" piece of card from the pad you purchased. Voila!
Two thank you cards done in the nick of time!