Whenever I take a moment to think about the things Rockford, Illinois is most well-known for this is the list I come up with;
Cheap Trick
Sock monkeys
The weird Symbol
The Home of Mrs. Fisher's Potato Chips
Yes, I know Rockford has more claims to fame (or infamy) than those 4 things, but they are always what comes to my mind first...
Mrs. Fisher's 'Thanksgiving Hot Bag Sale' is definitely something to be thankful for, and so is the fact that they are using shortening again to make their chips!