We put money in a birthday card for the DGC, £10 if they are ten or over and £5 for the younger ones. They can either spend it or save it - with or without help from their parents, but for my own AC I just send a card and no present (or money) apart from at Christmas when they get a present but usually no card.
Lack of public toilets in towns.
Passports not in the drawer I always keep them in. Turning the place upside down.