We had my son's 3 yr. old Bday party today, we went with the dinosaur theme. He loves Dinos! Anyway I found ideas from this site and some from a preschool site that did a week about Dinosaurs and some of my own. First I made invitations inviting the kids to explore the world of Dinosaurs with a t-rex on front and other Dinos inside .I found some pictures T-rex footprints online and cut some out of construction paper  and taped some of them to our walkway to the kids to follow to the door, where on the screendoor was a big DINOSAUR CROSSING sign (cardboard)that had some dinos on it. We decorated with Green and Yellow streamers hanging from the door and entrance to our kitchen/dining room. For the party I had drawn and painted a Triceratops head and front part of the body for pin the Horn on the Triceratops game, on a big piece of card board then cut out the front horn on some card stock, plus I drew a 5ft T-rex and I took individual pictures of the kids with the T-rex (Polaroid camera) and made souvenir cards made of card stock saying.. I went on a dinosaur adventure and I caught a  (open card).. DINOSAUR! and taping the picture inside the card and  putting the date of the party.  While waiting to get things started we had the kids color dino pictures from a coloring book and decorate plain brown lunch sacks with stickers and crayons to use for a dino egg hunt. I  had bought Easter eggs and put plastic dinosaurs in them for the Dino egg hunt, which was difficult because it was hard to get most of the dinosaurs to fit even into the largest eggs. I was only able to use 12 out of 26, but we were having a small party so it worked out and my sons didn't mind the extra dinos and the little kids loved hunting for the eggs and then finding the dinos inside!  For smaller eggs I added sprinkled jelly beans that looked like dino eggs and some stickers( I couldn't find dino stickers at the stores I went too, So I just used some popular characters. we played it simple with the cake, I did cupcakes with candy "nerds" on top they look like little colored rocks. We had dino PB& J sandwiches for lunch using a Dino cookie cutter.  I had planned another activity but we ran out of time, I had blown up balloons and was planning on putting paper lunch sacks with the left-over Dino footprints taped to the bottom and put the kid's feet inside and tape to their pants then have them do a DINO STOMP and try to pop the balloons.    The best part was the fact that without adding the cost of the Polaroid film the party cost under $30. The Polaroid film was around $12 for 10 pictures. Our nice neighbor gave me the cardboard box from his new recliner and that gave me the opportunity to try the dino drawings, I had never drawn before but by looking at some pictures in a Dino coloring book I was able to do it and received compliments. So you don't have to be a professional artist to try something fun and new. The kids seem to have really enjoyed the party and the Parents really liked the souvenir picture cards.