Safety Glasses
Safety glasses are a "must have" whenever you work with power equipment. They should always be within easy reach and a good work habit to have is "reach for the glasses BEFORE you reach for the power switch". No time-saving to-do is ever worth risking your eyes.
Also known as safety goggles, you should be sure to have these eye protectors for everyone working in the area that any electric equipment is operating. You also should wear safety glasses when cutting, breaking or grinding glass.
Good safety glasses can run $8 to $15 and more trendy ones can run much higher. There are also specialized safety glasses for welding and torchwork with glass.