Things You'll Need
Instructions
Wrap the electrical tape around the plastic bottle width-wise in alternating stripes.
Cut the bottom 2 inches off the plastic bottle and cut the bottle into four even sections, cutting from the bottom up to the bottleneck. Round off sharp corners and bend the sections so they flay out almost flat from the neck.
Cut the dowel with the saw to measure 6 inches.
Attach the dowel to the handlebars, pointing forward and away from any brake cables, with electrical tape.
Place the bottle cap on the end of the dowel and attach it loosely with a thumbtack, leaving the open end of the cap forward.
Screw in the bottle spinner, making sure the spinner does not touch any bike parts.