I worked with a Jarosch, he used to bring in wedding cakes that were not picked up over the weekend. Monday morning and, we would have a giant ornate wedding cake on the conference room table, the cake was meant for 300 people so we announced on the PA, cake in the electronics meeting room. It was quite a scene, hundreds of people standing around our department eating wedding cake at 8AM on a Monday.
Keans Bakery in Itasca
https://www.yelp.com/biz/keans-bakery-itasca Real bakery croissants with chocolate fudge drizzled over them. This place has been on my way to work for years.
Closer to home, Sauer's Bakery in Carol stream.
https://www.yelp.com/biz/sauers-bakery-carol-stream The doughnuts are very good, but the best things in the place are the pastries, more specifically the Black Forest Tort/Cake, chocolate and cherries, what can I tell you.
Pastries here.
Doughnuts and cookies here.
Also the best rye bread I have ever tasted.
Keans wins on doughnuts, Saure's for pastries and bread.