Drum lampshades can start from a size of 20" in diameter which is a perfect size for bedside lamps or they can be made as large as 70" in diameter for a truly contemporary look.  The Scion 'Mr Fox' pendant in the photograph is 40" diameter, the polkadot voile pendant is 50" diameter and the 'busy bee' lamp is a 30" diameter.  The bottom left-hand photo shows a candle lamp or wall light size.  

Pretty Swish Home can make scatter and box cushions in a variety of shapes and sizes.  They can be piped along the edge or a trimming can be used as a decorative edging.  In the photo I have used a pom pom trim.