Goq said:
“It’s wrong, they give you shampoo for you to use at the hotel it is not a parting gift, neither are towels, robes, toilet paper or light fixtures. “
IMHO, the little shampoo bottles and bars of soap are garbage to the hotel once opened or even get wet (wrapper ruined). They are not going to give the next guest a used bottle of shampoo or used soap, or just if the wrapper looks messed up. IMHO, those things, once used, may be taken home. The same applies to other non-reusable items.
Everything else is completely off limits.