What's a good display case for the Muppet Show busts?

[JJandJanice]

Ok so I was just looking on ebay for good display cases for my collection of Pez dispensers and WDCC Sculptures, which is a bit premature since I don't really have a huge collection of either. But now I'm wondering what would be a good display case for my Muppet Show busts collection. Though again not totally needed since I only have five (Kermit, Rowlf, Piggy, Link, Scooter and Janice, of course, ).

Right now they are displayed on a bookshelf, which they do look kind of nice on, but what would be a better case.