Riceworks

I've seen these at Kroger, but haven't tried them yet. Now, I have a good excuse!:-)

Join the Riceworks Advisory Panel - (possible free samples/coupons)

When you get to the end of the survey, you'll be taken to a page for an ad for $1 off a bag of Riceworks. It's a printable coupon. If you want to skip the panel, here's the direct link for the printable coupon.