Here's what the rest of the school library would be modeled after...although I'd go with a less "modern" look and more tree-like.
I used to make lots of these at art school from stuff called "straw board"- edges joined with PVA and surfaces painted with enamel paint. Forget what the name of the geometric form is called. They look great here.
What a great way to display a variety of students work that is an interactive display .. by Squarehead Teachers: "inspiration in a box" class project display