Zip-Up Ceiling looks like a quick way to finish a basement ceiling: Install trim around the perimeter, then infill with paintable PVC panels and hidden rails that can be unzipped later for cleaning and overhead access. Because the ceiling is plastic, it’s impervious to water and is mold- and mildew-resistant. Pieces come in 8-, 12-, and 16-foot lengths; 12-footers cost $26 for rails, $22 for trim, and $48 per panel. Zip-Up, 888.449.4787, zipupceiling.com