Designing flashy personalized license plates is a great activity for slowing down the party pace after a round of spirited racing.
Simply cut metallic poster board into 6- by 11-inch rectangles and use a paper punch to make a hole near each top corner.
Now the kids can stick on mailbox letters and add glitter glue borders. (To make the glitter glue stick more readily to the glossy surface, first rub the area you plan to cover with a pencil eraser.)
This craft is a part of these parties: