I must be a minority then,
None of us expect anything and if one person does not get something accept it is the parents and childs right to choose, often they only give to keyworkers which is more than acceptable.
Also...
I always send a thank you note to the child and parents for gifts given to us at the end of year, it is signed by all staff who receive a gift form a particular child.we note down each gift and make it personal to each child.
This is posted to them after the end of term, so they get it during the holidays.

At Christmas if we get gifts we thank them in person and I add note to newsletter or a thank you in the signing in book.

Think its an age thing!! Always wrote thank you letters as a child to relatives for presents.