I already posted this in currency exchange but it also qualifies as goods.https://bitcointalk.org/index.php?topic=41930
I've been exchanging the 100 trillion zimbabwe dollar notes since January (bitcoin-otc irc, various threads here aka guerrilla marketing p.ex. https://bitcointalk.org/index.php?topic=3433.msg48267#msg48267
) and still have fun to spread the hyper inflation message.
to be honest, I used to give them away for free but since I discovered bitcoin, I charge the shipping costs and since I sold out my 2009 stash, I also charge the approximately value converted to bitcoin.
I started a 2 day promo at .85 btc a piece (what a discount from the 8 btc from January!) to help me convert some Z$ trillions into bitcoin fractions. And not to forget, I mail my Z$ notes with post stamps with pictured bitcoins. Beat this, competition! : ))