40th Birthday Party Chocolate Bar Wrapper by APartyStudio, $10.00. Perfect for a 40th birthday party! This listing is for blue and grey chocolate bar wrappers sent to you as a DIGITAL file- ready to print on your home printer or at any print/copy center, such as Staples or Office Depot. You can print as many as you need! It is made to fit a Hershey 1.55 oz bar of chocolate. Makes fabulous party favors that are sure to be a huge hit!