As i mentioned before, i dont open others cabinets, dressers, drawers, etc.. If i needed a bandaid, i’d wash the area and put pressure on it with a tissue. If i didnt have tylenol and the host wasnt around, i’d live with a headache for the night until i could borrow from someone the next day.
I, personally, would leave out a hostess basket including those odds and ends that one may forget (bobby pins, safety pins, tylenol, bandaids, tissues, cotton, a brush, ponyholders, etc..) in addition to a bit of nosh/drinks in case my guests were hungry/thirsty.