The picture you see here is a 2012 Panini Golden Age Museum Age relic featuring a piece of clothing worn by actress Jayne Mansfield. I got this card last week -- but the best part about it, was that I got it for free.
You see, I got this through an NPN, or No Purchase Necessary, drawing held by Panini. And I got the information about this drawing from npncards.com.
All I needed to do was put a 3x5 index card with my name, address, and email address on it in an envelope and send it off to Panini before their drawing date. Panini will even add the information to your redemption page if you win, but not completely ruin the surprise by telling you what exact card you're receiving.
Every major company has an NPN program. In fact, they are required to have it by law. It's in the small print that you probably don't read on the back of a pack. I usually send in one NPN per product (some companies will limit you to one anyway). With all that we invest in the hobby, gambling the cost of one postage stamp for a hit isn't too bad, right?
So if you've never tried this before, check out the site and follow @npncards on Twitter for all of the addresses and information on currently available programs. If you have, use the comments to share what you've received.