Also adding
Wallet (with monies)
Some sort of picture ID
Personally some other things I'm packing:
'bathroom slippers' not afraid to get wet (for use in the hotel room)
Game charger(/s)
Watch/FitBit
I also using a bag (that I 'officially' started using last year) with general bathroom stuff...ie: toothbrush, toothpaste, etc. Includes travel size shampoo/soap cuz one fear I have is I get some weird skin reaction from the hotel provided soap/shampoo. (Hasn't happened to me yet but I've reacted to new stuff at home before)