I've seen a lot of card crafters do card sets and want to start putting some together myself. So I used this card sketch from the Papercrafts Connection blog as my inspiration. Instead of centering the stripe, I put it in the lower 1/3 position. The 'Thank You' sentiment is from Papertrey Ink.
The cards themselves were easy to make. I punched the panel on both sides out of a contrasting colour, glued it on the card base and stamped the sentiment. Despite their simplicity, I think they look really good.