Dinosaur Party 3-D Puzzle Party Favors. One package of 12 Dinosaur Party 3-D Puzzle Party Favors. 3-D puzzles come on perforated plastic cards and when assembled, become a life-like exhibit of a variety of different dinosaur species. Size 2 1/8" X 3 7/8 ". Warning: Choking Hazard - Small Parts - Not for Children Under 3 years old.