I have a couple robes from various casinos in Vegas and Atlantic City. They are really nice and plush. I'm proud to say that they were all given as comps for blackjack winnings. Unfortunately, I've paid for this "free gift" a couple times over on recent trips back to the casinos

If the item in the hotel is meant to be used by the next person using the room, taking it is theft. Thats why soap and shampoo is ok while towels, pillows, and robes are not.