Should Katie Just Get a Yoga Mat?

Dan and I have been busy working on Katie's new big girl room for a few weeks now.  We've textured walls, painted a ton, and are now installing a new fan with a cool switch and remote.  Soon we will be to the bed buying stage.  We have looked at kid beds and they are expensive and some still cheaply made.  Lately Katie has been sleeping under her bed.... so should I just get her a soft blanket and call it good?