If you have been looking for a bit of a challenging project or you happen to be at ease with your sewing skills try out the instructions for making a simple box cushion in the following tutorial. I am thinking about adapting the pattern to make the cushion for a window bench as well as a bed for my little furry friend!
Tutorial: http://www.designsponge.com/2012/01/upholstery-basics-boxed-cushion-sewing.html
the design of the cushion(used on a built in Window bench):
Idea for a dog bed that will fit in with any decor:
Vintage mrs 