Sample Showcase box from the USPS last year? They are gearing up to offer it again! Sign up HERE if you are new to Start Sampling/Sample Showcase. Their site is pretty cool in that it has a bunch of free sample offers that scroll through at the top of the page. A few were ones I didn't know about.
I got the email from them as a reminder, but it wouldn't let me sign into their site so I just signed up again and it let me. Just in case those of you who got this last year can't get logged on either.