Since your futon is a big piece of furniture that will be used for seating, it helps to complete your look with throw pillows and/or a throw blanket. This can help tie in your color scheme and make the futon look appealing. If you plan to use the futon as a bed, you'll also need to find sheets, a pillow, and any necessary blankets for sleeping as well. If you want a slipcover on your futon, you can purchase one to make washing easier and to protect the material that the futon is made of.