Coinstar is currently offering a $10 iTunes gift card by mail when you convert at least $40 U.S. dollars in coins into an iTunes Certificate.

Here are the essential steps:
1. Find the nearest coinstar location near you.
2. Convert $40 or more in coins into an iTunes e-certificate.
3. Get your code for a bonus $10 iTunes card
3. Enter your code at coinstar website.
4. Receive your card by mail in 2 weeks.
5. Offer ends September 30, 2010.