Great cards, everyone!
I actually have two, one for sentimental reasons, and the other for collecting reasons. The first is this 1977 Fidrych rookie. I pulled the card from one of the first few packs I opened as a 7 yr old kid. My Mom held onto it for decades as her own (she adored The Bird). She passed away just over a year ago at 84 yrs old, and left the card for me. It's a very special card to me, despite being a beat up piece of cardboard with a goofy, curly-haired kid on the front.
The 2nd card is one that I'll never sell, as it's pretty much irreplaceable. A 1914 Cracker Jack Ty Cobb with virtually no staining, no wrinkles or creases, in a lower grade that falls within my price range. It originally came out of a box of Cracker Jacks, but it now sits in an SGC 40 holder.