Barks' Christmas story, "The Thrifty Spendthrift", US #47.
Donald makes a gadget to hypnotise Scrooge into
giving him lots of Christmas gifts, but HDL meddle with
it, and when Scrooge is hypnotised, he gives all the gifts
of "The 12 Days of Christmas" to a dog. Scrooge is
hypnotised through most of this story.
---Larry Giver.