Guess how many in objects in a jar
Fill a clear glass or plastic jar (with a secure lid) with a known quantity (yes, you have to count them!) of candy, marbles, pennies, tiny toy cars or some other item that ties in with the theme of your party. Decorate the jar and lid with stickers and a bow and place on the arrival activity table. Provide slips of paper for guests to write their names and their “guess” and a small basket or box to collect the entries. At the end of the party award the jar of goodies to the child with the closest guess.