Yep, my two mistresses love cardboard boxes as well... so much so that I have given up on the special cat beds I bought them and now they just have an old cardboard box each.... filled with newspaper ! If I put a newspaper on the floor, then big thug has to sit on it straight away.....lol..... in fact she has been known to knock newspapers off the coffee table onto the floor (*ahem* accidentally lol) just so that she can then pounce on top of it.... I keep a selection of new birthday cards in a little M&S carrier bag and now big thug has also adopted that bag as her latest cuddle-up-to-place...... well, at least I always know where the *card bag* can be found - somewhere near big thug...lol