This would be neat to create a community book shelf. Basically people can bring books to donate & while you are there you can read. It's as simple as installing shelving like this (just a few shelves) on the wall, and I would lean the books up so the titles could be viewed. It would not take up a lot of space and people would probably love it (I would!)
Using thousands of soft drink bottles which have then had the base filled with coloured water makes this stunning piece of art work.