Polyvinyl rolls are most definitely something to keep on hand during homecoming week. This water-resistant decor alternative makes covering large areas in school spirit simple and effective. Plus, polyvinyl is available in a flame-retardant grade, so it's safe for use all week long. Patterned polyvinyl is perfect for covering lockers, too. The night of the dance, cover all of the lockers leading to the party with black and white checkered polyvinyl for a 1950's feel.