DIY upholstered bed frame and headboard. Great pictures of the process of building it on the linked site. Maybe something like this in the master bedroom with a rich tapestry fabric on the headboard and complimentary plain fabric on the box.
The most thrilling part of building a headboard from scratch is customizing the shape and size to suit your aesthetic and space. Learn three different ways to construct a headboard frame and how to hang a headboard on the wall.