Clothes Pins~ They are wonderful to hold curtains closed in hotel rooms and have come in handy on many occasions for unexpected reasons (such as hanging wet clothes, keeping an open bag of chips, etc. closed).
A three pronged power adapter (has three outlets) which expands a normal outlet to four places to plug things and is not as heavy as a surge protector.
A nightlight, hotel rooms can be dark (I actually carry several).
Air Freshener
Crazy Glue~ fixes everything.
Safety Pins, Emory boards, elastic hair bands (works as rubber bands as well). UNO cards, Ziploc bags in assorted sizes.
These are just a few of the things I always keep packed in my overnight bag.
I also pack a bag of medicine with Tylenol, ibuprofen, beano, acid reducer, cold meds, polysporin, Band-Aids, etc, prescription meds. Medical notebook with list of doctors/pharmacies (actually has their business cards with all of thier info), medication names, dosages; important dates (surgeries, procedures), etc., extra insurance cards.