I had planned my step daughters Sweet 16th Birthday party at Disney last year. I wanted 'special' invitations to match a beach theme, so I went to a craft store and purchased invitations that come in a plastic bottle, and they are actually approved by the USPO (United States Post Office) for mailing. However, I wanted to add more to the invitations so I decided to get shoe boxes, paint them all blue and inside each person received the plastic invite, a plastic beach shirt form bottle holder, a tube of sun screen and some candies which read 'Sweet 16" on the outside of the wrapper. On the side of each shoe box, I was able to decorate it with form stickers and personalize each invitation to that invitee. Each invitee was so excited about receiving it, that they personally called me to tell me and to give me their RSVP. It seemed to me the party had started even before we arrived at WDW!!!