I keep ones from my students because if anyone ever accuses me of being a shitty teacher, I can say, "Oh, yeah? Look at this!" Just a weird quirk. Besides if I'm having a bad day, I remind myself that it's just today and not all the time.
Sometimes my husband writes me little notes on pieces of paper. Like this one time out of the blue, he wrote: "An meine kleine Maus: Ich liebe dich - so wie du bist!" (To my little mouse: I love you just the way you are). A little teddy bear is sitting on my subwoofer, and he has it in his hands. Things like that mean more to me than cards.
Other cards get tossed. Seriously, why do people ferking get cards anyway?