In most aspects of my life, I am not a pack rat, but I am with cards and notes. I have about every card/letter/note I've ever received. I used to glue them into big scrapbooks in chronological order. I gave up on that years ago and now just collect them in a basket and when the basket gets full, I put them in Ziploc bags. They are all stored in a cedar chest in my guest bedroom. I rarely look at them, but I feel like if someone took the time to write a note or buy a card, I should keep it.