The design is for a birthday invitation, but it's a great idea for a launch party invitation! Encourage your guests to bring their balloons. They can double as a party game if you put little messages inside of them!
Balloon Elephant Card - Kid Craft - Glued To My Crafts
Fairly Crafty: Graduation Card - Step by Step Instructions!
DIY Popsicle Invitation idea ^^ - perfect for summer parties
mortarboard by tessaduck - Cards and Paper Crafts at Splitcoaststampers. She calls it a fancy fold card. I call it clever. Like the graduation quote too.