Lap robes are nice, but usually find their way into someone else's home very quickly. A house coat would be nice, make sure to label it.. Many times a duster/house coat is what my Mom preferred to wear. I made mom several out of bright, cheery colors. She loved those and you don't have to worry too much with fit.
Do you know if she will have a private or semi-private room with her own furniture? If she will have her own bed, chair and tv I think an over-the-arm remote caddy would be very handy for her to use. My mom loved to watch tv and read.. Her caddy held her remote, a book or magazine and a package of tissues and a few other things she liked to have close at hand.
Anything you make, be sure you label it indelibly and permanently, in nice bold visible lettering.