Here's a quick technique that kids can use to print valentine cards. Even the youngest children will be able to have a go at this idea. Make just one - or one for every member of the class and family!
You will need:
Paint a square on a tray or wipe-clean tablecloth. Using your finger, draw a heart in the paint. Carefully press the card on top so the design prints on to the card.
You may be able to make 2 or even 3 cards before wiping off the paint and starting again. Older children can of course get more imaginative with their designs.