Static charge builds up when outside air becomes cold and dry, because charged particles can move at a more rapid rate. You can observe this static electricity when you see hair stand up when you go outside during cold winter months. You can also observe this static electricity when you rub your hands rapidly on carpet or fleece.
Blown-up latex balloons can demonstrate static electricity. Blow up a balloon and run it against a wool sweater or a fur jacket, then place the balloon on a wall to see how the static electric charges make the balloon stick to the wall. The negative charges in the balloon are attracted to the positive charges on the wall, which makes the balloon stick.
People often experience small static electric shocks when they get out of a car. This static electricity is created when people are sitting in the seat of a car and the friction of their body against the seat creates the electric charge. You may observe a static shock on your hand when you get out of the car and close the door, or even when you are sitting in the car and your hair begins to stand up and touch the roof of the car.
Light tissue paper can demonstrate static electricity when a dry comb is run through a person's long, dry hair and then placed above a sheet of tissue paper. This creates a similar electric charge as a balloon to a wall, making the positive charges in the comb attract the tissue paper.