Details are often the difference between a room that's decorated and a room that's finished. One of the more charming aspects of visiting decorator show houses is seeing the profusion of clever detail: lamp finials that carry out a nautical theme, lamp shades that match wallpaper or fabric, floral arrangements that reinforce color schemes, subtle faux finishes that tease the eye. Thanks at least in part to all this interest in decorator detail, there are a lot more sources of finishing touches for ordinary folk. For example, there's a multitude of switch-plate covers, in fancy and fanciful designs. With the simple turn of a screw, you can add a whimsical or luxe touch to a child's room, garden room, family room or bath. Here are some of the ones we found.