Check it out...
http://www.cafepress.com/digitalgarden/554356
Edit: I'm not promoting sales of these products and Husker told me it is not the official MinuteMan logo. I posted the link because I thought it was rather 8)
That's where I got my current avatar. We could show support of MMP by changing our avatars to one of the numerous jpegs including apparel, coffee mugs, etc.
I didn't even have to resize mine.