But never mind about the shower gel or packet of special moisturing lotion or whatever else they may sometimes give you too.
Where's the toothbrush and toothpaste?
If I've forgotten to pack them, I absolutely hate it. One of the worst things to me is going to bed (or waking up) without being able to brush my teeth.
So forget the five different types of herbal teas or soothing unguents, I just want a small disposable toothbrush with a tiny tube of toothpaste, as some airlines provide on long haul flights. A couple of pieces of floss wouldn't go amiss either...