But the spinning bottle bounced back and forth. Next attempt used metal and bearings to stabilize, but failed.

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  The materials used in final product.
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  Step 1: Emptied soda bottles and removed the labels.
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  Step 2: Cut 5.5 " strips of aluminum tape and stuck them to the middle bottle.
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  Step 3: Made three sections, with 0.5 " in between each section (only on the middle bottle).
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  Step 4: Covered the outer two bottles completely with the aluminum tape.
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  Step 5: Measured the wood and drilled holes in appropriate places. (at 4.5 ", 9 , and 13.5 ".
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  Step 6: Created a "dimple" in the metal bottle cap used with the middle bottle (with a dull nail).
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  Step 7: Drilled holes in the bottom of the bottles.
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  Step 8: Screwed the outer two bottles to the wood with a long rod, duct tape, and plumbers putty. Cut a metal rod ,similiar to a coat hangar, filed the end to a point (for a better spin), and used for the middle bottle.
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  Step 9: Taped a wire to each outer bottle and pointed them towards the middle bottle. Taped a small wire "loop" to the bottle so it could be hooked up to an electrostatic generator.
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  Step 10: Checked the resistance with a multi-meter.
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  Step 11: Taped a ring of aluminum foil around the top of the soda bottle because the adhesive on the aluminum tape was nonconductive.
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  Step 12: Done!