Have a child stand over a jar with a somewhat small opening (depending on child's age). Let them have 10 clothespins and see how many they can put in the jar by dropping them as they stand straight up.

This game must be played outdoors for it gets a little messy.  Divide your guests into two equal teams. Have them line up in two horizontal lines facing each other about 2 feet apart. The person facing the other will be partners. Give one line an unboiled egg.  At the sound of "go" the partner with the egg will toss it to the one facing him. They must catch it without it breaking. If someone breaks the egg or does not catch it, they are out. Before they toss it again they both must take one step backwards. Repeat this until only one team is left. You may substitute water balloons instead of real eggs.

Any food is fun with the right name.
Simple hamburgers turn into Brontosaurus Burgers
Fried Chicken into T-Rex Chicken
Pizza into Molten Lava Pizza
Pretzels into Dino Bones
Red Punch into Lava Juice

Make a volcano cake out of a Bundt cake. Fill the center with pudding and let it ooze out the top. Place plastic dinosaur figurines around the bottom and on top of the cake. You can make dirt around the bottom by sprinkling graham cracker crumbs.

Number 1 Candle

Don't forget the Barney balloons and crepe streamers. Hang lots of Barney balloons and a Barney banner from the doorways for your guests to walk under.

Barney Balloons  /  Barney Banner