For as long as bikes have existed as popular methods of transportation, owners have customised their rides with baseball cards in the spokes, tassels on the handlebars and decorated baskets above the wheels. Homemade spinners are another way to customise your bike. All you need is a few common household objects. Your customised spinners will rotate in the breeze, much like a propeller, as you speed down the street.
Cut the bottom two inches away from your one-liter plastic bottle. The easiest way to do this is to punch a hole in the bottle with the tip of your scissors and cut from there.
Make equally spaced cuts up the length of the bottle, splitting the bottle into six long blades.
Measure six inches from the end of your 3/4-inch dowel and make a mark on the wood with a pencil.
Hang the end of your dowel rod off of a flat working surface. Hold the rod on the surface with one hand. Cut through the rod with a wood saw.
Tape one end of your wooden dowel to your bike's handlebars. The rod should extend forward horizontally over your front tire.
Wrap a long length of tape around the dowel approximately 1/2 inch from the forward tip. Continue wrapping the tape until it forms a large cylinder of tape one inch in diameter.
Insert the end of the wooden dowel into the plastic bottle nozzle. The nozzle will rest against your tape cylinder, which acts as a stopper.
Flare out the plastic blades, exposing the dowel rod tip. Press a milk cap onto the flat rod end. This will hold the flared blades outward. Secure the cap in place by inserting a thumbtack through the milk cap and into the dowel rod.
Ride your bike down the street and pick up plenty of speed. The wind will cause the plastic blades to rotate on the dowel rod, creating that signature propeller effect.
Cut curves in the edges of your plastic blades for a more natural propeller look. Decorate your blades with coloured tape or permanent markers.
Make sure that your homemade spinner does not obscure your vision or hamper normal bike operation, especially braking.