You can add a lighthearted charm to any small corner, or large if you're willing, with a paper theater. For example the image below shows a paper theater that does not animate is possibly mounted on in a frame. You can find a similar frame at any local craft shop and use online cut outs of for the scene as shown.
We collected a few pre-fab projects for you to download or purchase if you're looking for a more professional finish.
Paper Theater on Amazon
As of this post you can purchase a wonderful little model for your home or office on amazon [+].
Steampunk Style Paper Theater Wood Project
This is a wonderful UGears[+] steampunk theater that requires a little assembly but will add a wonderful touch to your bookcase.
Download and DIY Paper Theater
How about make your own paper theater provided by the Victoria and Albert Museum. Below are a pdf instructions and cut out samples you can download for free!
And Many More
All you need to do is google "Paper Theater Samples" and you're going to find plenty of samples that you can download for free and assemble over a weekend.