Fifty Shades - What to Do?

Worrying news today that charity shops are being bombarded with unwanted copies of Fifty Shades of Grey, the allegedly erotic megaselling  'bonkbuster', at such a rate that they simply cannot cope. As soon as they shift one copy, two more come in - and they can't even be recycled (apparently there's a problem with the glue). Surely, you're thinking, Fifty Shades is a book that repays endless rereading, constantly revealing new depths and resonances, a book that speaks anew to us at each stage of life's journey. Alas, it would seem this is not the case...
Something must be done before this fair land of ours disappears under mountains of unwanted bonkbusters. But what to do with them? How about compacting them into bricks and using them as a novel (geddit?) building material. If only on a small scale, they would surely be of use - we could have, as a starter project, fifty sheds of grey...
Any more ideas? We'd better come up with something before the wave of unwanted copies of Dan Brown's Inferno hits the charity shops next year.