Sorry I can’t find any bigger / better images of this quite remarkable thing. It’s a kit that enables you to grow oyster mushrooms in the pages of old paperback books. You just put the spores inbetween the pages, damp it down and away they grow. Makes sense when you think about it, they grow on damp trees so it’s not that strange they’d grow in books.
The kits can be ordered from here and cost £9.99. The perfect gift for the person who has everything (including some old books they might not want any more).
I don’t think I can resist…
Oh, and it could beat the hell out of the old ‘growing cress in the carpet’ gag. If I turned up and my books had started sprouting oyster mushrooms I think I’d be quite worried.