For this reason, abandoned refrigerators sat in front of private homes for weeks. There were thousands of refrigerators lined along the streets of every neighborhood affected by the storms, usually surrounded by piles of garbage bags and other debris. Residents quickly began decorating their refrigerators with graffiti. It was at this point that the destroyed refrigerators became known as "Katrina Refrigerators". At first, the graffiti featured humorous or satirical messages. The graffiti became increasingly elaborate, and soon developed into a form of art. People began photographing Katrina Refrigerators, and there were even exhibitions and books featuring these photographs. During the first Christmas after Hurricane Katrina, four months after the storm made landfall, some Katrina Refrigerators had not yet been collected. These refrigerators were decorated with festive Christmas ornaments and salutations.