Magic Balloons: Blow up several balloons. Let the children rub the balloons on their clothes or their hair and place them on a wall. Have the children try guessing what causes the balloons to stay up (static electricity).
Popping Balloons: Let the children help you pretend to blow up balloons and fill the room with them. Them have them pretend to tape sharp pins on their knees and elbows so that they can "pop" the balloons. Encourage them to reach their knees and elbows way up high and way down low until all of the balloons have popped.
Cucumber Balloons: For balloon snacks, slice cucumbers to make cucumber "balloons".