The Phonetics Lab crew at UW–Madison, led by Tom Purnell, has developed a software package called WiSCO – Wisconsin Speech Chain Online. It gets students plotting their vowels with minimal training, and allows them to compare their vowel system, or parts thereof, to those of others. So, you can see how raised your /æ/ in bag is compared to folks from Minnesota or Illinois, or how fronted your /a/ is. I know they're looking to go public with the program once they get a couple of details worked out.
In the meantime, this week, bumper stickers (basically like the image below) started popping up around campus.
And just this morning, I heard that you can order t-shirts from CafePress, with no markup, from here. Woohoo.