If you break a mirror, don't despair! There's still plenty of powerful magick in that glass to repel any negative energy from your home. Carefully pick up all the broken pieces and place them in a lidded clear glass jar or bottle big enough to hold them. Be sure to sweep up all the tiny pieces and even the glass dust and add them to the bottle as well. Not only does each and every fragment act as a tiny mirror on its own, but you've also just created a makeshift witch ball. Just as the sharp tendrils of blown glass within a witch ball lure and trap all manner of uglies, so do the sharp pieces of mirrored glass in your bottle. Close the lid tightly, place your mirror bottle on a sunny window sill and be sure to keep it well dusted. Its magick will serve you well.
Photo courtesy of MrNobody97 on flickr.