One of the fun places that my mother and I visited while in Chicago, was the Hershey's Retail Store.
This is a really huge store. They sell candy of course, all of the regular Hershey's brands, some of them in special sizes and packaging. They also sell t-shirt and some toys, Hershey's trucks and teddy bears and stuff like that.
They have a few really neat things there, one is that you can buy a personalized giant Hershey's kiss with a custom message, or a message written in chocolate on a giant chocolate bar. You order your item and they personalize it while you wait.
They also have a cute thing for children where you can get your picture taken with a Hershey's factory worker hat, and they make a badge for you, an honorary Hershey' factory worker and they give the children a small bucket of Hershey's candy for $14.95.