I bought 4 new Michelin tires for my 300d Benz. Unbeknownst to me there was a rebate offered. The tire shop gave me the paperwork and I dutifully filled it out and sent it in. I just got the prepaid Visa card with $70 on it.
Now that I am rich I am off to invest the $70 towards a brick of 5,000 small pistol primers.
Now THAT is wise investment!