I changed the this plan to make it into a puppet stage for my niece's birthday.
I added a curtain rod and made some curtains to fit. I put two shelves in the back, but I put dowels in along the shelves so she could put her puppets on them for easy storage. I used a piece of a sheet of wainscotting for the front of the bottom.
I also put chalkboard paint at the top to allow her to write the name of puppet show that she is performing.
I was able to use some scraps that I had around for quite a bit of it, so it was pretty inexpensive.
The pictures are not great and I wish I would've taken pictures of the back before I gave it as a gift, but the kids are having lots of fun with it. I'll have to take some better pictures the next time I visit.