My boys turned 7 and 11 years old and their birthdays are very close together. For their combined birthday party favor I made these for the guests. "Thank you for celebrating our 7 eleven birthday today" Enjoy a slurpee on us! $2 in the envelope behind the card. It's better than all the plastic junk they usually get. Filled the slurpee cups with some candy, silly straw and tissue paper.