I was on complete bed rest for 5 months with my second pregnancy. Your SIL may already have these things but some very useful things to me were just whimsical grooming things. YUP. A fun mirror, a fun pair of tweezers for my eyebrows,
http://www.sephora.com/art-of-.....Id=1596097
facial wipes ( since I couldn't get up to wash my face ), hand wipes or a fun hand towel and hand sanitizer, a fun sonic toothbrush
http://www.amazon.com/Violight.....38;qid=139
nail polish remover pads, nail polish, pretty tissue boxes, a cute trash bag
http://www.amazon.com/Vera-Bra.....d=13990921
Little things like this, filled with color, made my daily use of them fun. And of course magazines in a lovely canvas bag ( Even a pretty notebook and pen ), http://www.llbean.com/llb/shop.....g-open-top
Also, something that was a HUGE help for me was something that I could use on my top half to keep me warm but wasn't a full on robe. Something like a bed jacket :
http://www.amazon.com/s?ie=UTF.....%20jackets
A nice place mat for her hospital try table.
The bags were very important to me since everything had to be kept close to me since I couldn't get up.
And though I am not a big make up person, I LOVED playing with make up, so people would get samples of things for me and I could entertain myself for quite a while.