When I came home from the hospital last year, we (i.e., Marian) scurried around for a few days moving furniture. In the end, one of our sofas ended up getting shoehorned into my study, where it was out of our sight and all too vulnerable to feline claws. So a few months 
ago we bought a cheap slip cover, basically designed to give the cats something to claw at other than expensive upholstery. It’s mostly worked, but there were unforeseen consequences.
You see, the slip cover has an elastic band around the bottom to keep it in place. When the cats discovered this, they decided it made a great cat hammock. Over on the right, you can see what it looks like from the outside. Basically, it’s just a bulge. I think you can guess what happened next after I took this picture. (Insert Battle of the Bulge jokes here.)
Luckily, I also took some pictures before Hopper showed up, something I’ve been doing for weeks. But as you can imagine, it’s really hard to get a decent photo from underneath the sofa. However, thanks to my persistence, along with my camera’s articulating LCD screen, I eventually got one. Below, you can finally see Hilbert in the the cat hammock close up. It’s pretty obvious what the attraction is. In fact, you’d practically think it had been designed as a cat domicile: dim, cozy, and shaped like a cat. Who knows? Maybe it was, and we just got tricked into buying it.