Excerpt from Everyday Wicca:

Introduction
Have you ever wanted to cast a spell? Perhaps you already have without evenbeing aware of it! For example, simple acts such as making a wish on a fallingstar or throwing a pinch of salt over your shoulder to avert bad luck arecustoms that have actually evolved from ancient Pagan religious beliefs andpractices, and could be considered two basic acts of spellcasting.

Of course the mere making of a wish or the throwing of salt into the air doesnot in itself make one a Witch, but they are both examples of how simple folkmagick works.

To make these mundane gestures into a true act of magick, all one would needto do is perform it with visualization and intent.

For instance, to add magick to the wish made on a star, you would need tovisualize the wish coming true as it is being spoken in the form of a spell (orprayer to the Goddess and/or the Horned God) for the desired outcome. Example:

HARMING NONE AND RESPECTING THE FREE WILL OF ALL LIVING THINGS, IT IS MY WILLAND INTENT TO

(state whatever it is you are wishing to attain or accomplish.) To seal thespell, the phrase:

SO MOTE IT BE

would then be said.