Dinosaur Birthday by Birthday in a Box From $10.59 A Dinosaur Birthday party is a wonderful idea for an upcoming birthday. With the assortment of party supplies available at Birthday Party Themes, decorating for this party is fun and easy. Grab a basic party pack for all the items needed for the occasion. The plates, cups, napkins and invitations as well as balloons and the centerpiece for the table are part of the pack. It even includes the candles for the cake and placemats.