At first glance I thought that this was a butterfly wing but no, a leaf blown in from the garden. It must have missed the occasional floor brushing I do and lodged itself under the dresser. Now if I'd swept thoroughly it wouldn't have been there and I wouldn't have had a happy half hour taking photos of it.
The older I get the more I believe the saying "show me a tidy house and I'll show you a woman/man with a wasted life" maybe that's a bit harsh but then again, maybe not ;)