The key to making a home gym in a small room is to make use of vertical space. Try investing in wall-mounted racks for weights, adjustable racks for dumbbells and barbells, or even wall-mounted pull up bars. You can also use the storage space beneath your bed to store small exercise equipment. In addition to making use of vertical space, try to keep your workout area as neat and organized as possible. This will help maximize your space, while also making it part of your decor.