These stickers, originally done in 1998 with Big Jon Nelson were made simply because they were a great idea, an easy way to get that idea out to fans and a way to help Mike and Jon with a bit of gas money to get from one show to another. They were very well-received and some shirts were even done.
Mike has reprinted some of these stickers again and agreed to donate $1 from each sticker sold to the Mockingbird Foundation.
1 for 3
2 for 5