Slice a metal coffee can along one side and through the bottom; this allows the can to be pried open. A hole the size of the exact diameter of the tricycle’s post should be cut into the bottom of the can. The can, can then be placed around the post with the bottom resting on the fender strap. A scrap of wood can be nailed inside to stabilize the upper portion of the can. Tape the can closed. Pad and cover with vinyl so that the child’s leg does not stick to the post.