Make a handwoven bookmark simply and easily while learning the basic concepts of weaving on a cardboard loom. The bookmark makes a wonderful gift; or, maybe use it as a rug in a dollhouse or as a saddle blanket for a small toy horse. Make the loom in different sizes and sew the resulting fabric into coin purses, coasters, hot pads—whatever you can imagine. Looms can be as simple as a piece of notched cardboard to something as complex as the big, fast, mechanical, computer-driven looms in cloth factories. For this project, we will use a simple notched cardboard loom..