The seats next to a window offering a cozy corner for reading, relaxing or just watch the world go by. However, it is possible to make your own window seat cushions with Styrofoam inexpensive, high density foam, fabric and hot glue. Measure the length and width of your window seat. If the seat has an irregular shape, place tissue paper on this and outlines its contour to create a pattern. Use these steps to make sure you buy enough polystyrene foam, high density foam and fabric for your project. Purchase enough fabric to cover the entire length, width and height of supplies.
Cut your Styrofoam according to the measurements of window seat cushions. If you have a pattern of tissue paper, place it on the foam and fixed a few pins within the delineated to hold it in place contour. Use an electric knife to get the best results when cutting; this tool cuts quickly and leaves clean and straight edges.
Styrofoam placed on a flat surface, and uses the glue gun to clamp the above polystyrene foam. Apply a line of glue around the perimeter of Styrofoam, and make several lines that pass vertically and horizontally through the center of this area for window seat cushions. Place the foam on Styrofoam and glue lines.