For my son's 3rd birthday we had a DINOSAUR party. Here's what I planned for the big bash:  Food: PB&J sandwiches cut with dinosaur cookie cutters for the kids, the adults had a party sub. Also chips, fruit salad, Jell-O "dinosaur eggs", and veggies and dip.  My mother-in-law made the T-Rex cake(Wilton mold), and 6 mini dino cakes for each child.(bowling pin mold with piped legs, head, tail, spikes--so cute!) Activities:  (1)Dinosaur egg hunt--I filled plastic Easter eggs with various goodies, and color-coded them. Each child was allowed to find 4 eggs, and each one had to be a different color(so they wouldn't get more than one of each prize inside). Eggs were filled with speckled jelly-bellies, mini dino erasers, dino stickers, and a superball. They had a brown paper lunch bag for collecting their eggs. (2) Pin the Horn on the Triceratops--I used an overhead projector to enlarge and trace a picture onto posterboard, then I colored it in, leaving the nose horn white.  When it was their turn, the kids taped on pre-cut construction paper horns.  Goodie bags: I painted footprints on lunch bags with a potato shape I cut. I found some great dinosaur sucker molds on ebay, and made suckers for the kids.  I also had dino fingerpuppets, pencils, stencils, stickers, party whistle, blow horns, and foam dino masks(found TONS of dino stuff at Oriental Trading!).  Decorations:  I used Land Before Time invites, plates, party hats, and centerpiece.  I added green and purple streamers, napkins and balloons. I had lots of dino posters and cut-out pictures hanging on kitchen cupboard doors, bathroom doors, and hanging from ceiling fans.   It was a really fun party for my son and his cousins and friends! One of the best gifts he got was from my mom:  A big plastic storage container filled with dinosaur items--museum quality plastic dinos, dino beanies, dino pajamas, dino puzzle, and dino books.  It was DINO-riffic!