My granny's favorite things:
"I don't care what you give me for Christmas, as long as you make it yourself"
When my granny gives us presents, she used to give us blank cards as well, to ensure that she received a thank you card.
I made her these cards and envelopes, so that she can have nice cards at hand to show off to all her friends. Instead, she says "ooh no! I can't use these! They should be framed!" which means they will stay in a drawer somewhere forever. Next christmas she shall get bathsalts.