Stick foam numbers (or simply write) onto plastic garden label sticks. Hide the sticks in the garden and then send the kids outdoors to find them. Once found, ask them to line up the sticks in the correct order.
The Sky IS the limit for where this handmade congratulations card can take you! The kite is the focal point, with interesting sky and cloud background. I like the stripe of sky paper that shows on the inside of the card.