This is a simple experiment that shows what effect static electricity has on water. Turn on a tap so you get a steady, but slow flowing stream of water. Rub a plastic or nylon comb across a wool fabric about 10 times. You need to rub it in the same direction, not back and forward. Move the comb near the center of the stream of water, but don't touch the water. As the comb gets near watch the water bend towards the comb. This is because the static electricity in the comb is trying to discharge, so attracts the water toward it.
This makes for a bit of fun, while still seeing the effect static electricity has. Draw the shape of a few frogs on a sheet of paper, and then cut out the frog shapes. Put the paper frogs on a work surface. Blow up a balloon and then tie the top to seal it. Rub the balloon vigorously on your hair for about 15 seconds. Put the balloon near the frogs, but not close enough to touch them. As the balloon passes over the frogs, the frogs start jumping. This is because there is an imbalance of electrons in the balloon and the static electricity needs to discharge. The balloon attracts the paper frogs and because they hardly weigh anything they give the appearance of jumping.
Blow up two balloons and tie a piece of string around the neck of the balloons. Hang up the balloons, so they hang about 6 inches apart from each other. Rub one balloon with a nylon fabric and the other with a wool fabric. Let go of the balloons and watch them move toward each and stick. This is because both have a static electrical build up, but one balloon has an imbalance of positive electrons and the other an imbalance of negative electrons. The negative and positive electrons attract each and so the balloons move together.
Use the same balloons and keep them hanging from the strings. Static electricity dissipates after a few minutes, so the two balloons move apart and gravity takes over. Rub both balloons using the same type of fabric, so either use wool or nylon. Let go of the balloons and this time you see them swing away from each. Both balloons have an imbalance of the same type of electrons, so they repel each.