CD/DVD Roofing Concept

I needed a use for old CDs and DVDs. My friend runs a website selling media items (mediamad.co.uk) and he gave me a stack of CDs and DVDs that he couldn't sell for a project of mine that never reached completion. To use them up I thought up this, and after not being able to find it on the web or instructables, I felt obliged to follow Kiteman's zeroth law.

Instructables

Space: WHy bother?

Is space worth it?

Another year, another whirl of astronautical triumphs and failures, all at the taxpayer’s expense. With environmental problems already testing us to our limits, do we really need to go in search of the mysteries of the universe?

Ecosalon

Bloom Box Launch Is "Big Hype"--Invention Nothing New?

National Geographic