After hearing about this place from foxxychica and semi-hipster homeowner, my husband and I finally tried out Margie's Candies. (I was hoping that it would be Chicago's version of NYC's Serendipity 3.) The decor was very old and brown (although, I like that they have not changed it over the years) and the Tiffany style lamps reminded me of Serendipity 3.
I ordered a chocolate malt and it was good (not as good as Oberweis) - my husband ordered a waffle cone with mint chocolate chip and cookies and cream ice cream. The homemade ice cream was AMAZING and the next time I go back, this is what I will be ordering.