Humans perceive the world around them with the indispensable assistance of lights, smells, and games of Marco Polo. Illuminate your world with today's Groupon: for $25, you get $75 worth of lighting fixtures, lamps, and mirrors at Progressive Lighting, with five area locations in Atlanta, Cumming, Duluth, Kennesaw, and Roswell.

Trained and certified by the American Lighting Association, the staff at Progressive Lighting expertly guides abode brighteners through one of the Southeast's largest assemblages of illumination supplies. Progressive's show rooms brim with indoor and outdoor lights, ceiling fans, and décor pieces, as well as wall sconces, such as the Savoy House Thornbury ($74), to add lambent glow and regality to throne rooms.

Give end tables a sense of purpose with the Crestview Collection table lamp ($99), or peruse environmentally friendly fixtures made from recycled and reclaimed materials. The Elk Lighting Mela Pendant ($70.20) makes countertops look chic with unique, hand-blown glass designs and wavelengths of light perceptible to humans. Before striding into one of the show rooms, idea-starved shoppers can check out Progressive's how-to section for suggestions and décor tips.