Sometimes a card that says a big "thank you" is just what you need! This one prints at A5 size, and looks fabulous on glossy card if you have it. Use your printer's borderless settings for the best results.
This lovely thank you card has the added benefit of needing very little printer ink - but it still looks fabulous, especially if you print it on to good card. Keep some on stock for the kids to use for thank you letters, perhaps.