On September 28, 2011, you can get a free sweet treat at Maggie Moos:

From 3:00 p.m.-6:00 p.m., stop by participating locations of Maggie Moos for a free mini waffle sundae. And do check the list of participating locations before you go. I was surprised to see that the participating locations in my area are pretty hit and miss.

http://www.maggiemoos.com/waffle-sundae.aspx