Thanks for the comments everyone.
Ariannaquilts: The colours in the other fabric really don't work with this one, and I plan to use the dark blue as the binding (it has multicoloured bubbles all over it that you can't see in this picture);
BonnieJP: That organizer is a great idea but I've never met the girls and I don't know anything about the set up of their rooms, so I don't know how that would work;
Rhonda K: my mother suggested a pillowcase as well, but it would kill me if she put it on the bed with this quilt (not that that should be my problem because I doubt I'll ever get to their house to see it) but the tote bag is an idea that I'm going to mull around. I'll have to see what time I have left after the two quilts are finished, since it has to be shipped across the country as well, to arrive around Dec 15 when my brother and SIL plan to arrive there for Christmas.