The 36 x 45 is approx what I used to make for my Mom. I also stitched in some little ties on the top edges before adding the binding so that I could tie the quilt to the chair arms so it wasn't a problem with it slipping. I also made a pocket that was only attached at the binding, so she could put her "good hand" down into the actual pocket (sorry I'm not describing this very well)
One fun pattern was an easy attic window, and just use some fun fabrics for the window.
This is one I actually made from scraps for my MIL.