Designing an invitation in the form of an event ticket or gift certificate can add a cute twist to many birthday party themes. For instance, if a guitar-loving boy wants to have a rock 'n' roll themed birthday party, the invitation could take a cue from a concert ticket. Your home address can be highlighted as the concert venue, and you can create a tear-away section on the side of the invitation for a free piece of cake or goodie bag.
You can also incorporate the smaller "admit one" tickets into larger invitations. Perhaps fold up a side of the invite to form a pocket, and tuck a ticket inside of it for guests to show upon arrival.
Complementary Party Themes: movie magic, rock 'n' roll, Hollywood glamour, carnival, circus.