I used to give my Christmas cards to a senior center. They don't want them any more.
But, a couple of years ago a friend gave me a good idea. Tear off the front part of the used card. If it's blank, then use it when you make your to-do lists or grocery lists.
It's so fun and so pretty!
I find it very cheerful.
Then recycle or whatever.
PS. I do this with birthday cards now too.
PPSS - only put healthy things on your grocery list!