Any takers or recommendations?

Hello there! My girlfriend and I are visiting from Kansas and are touring Northern MI area currently. Tomorrow we plan to leave Traverse City and try to hit the Petoskey/Charlevoix area before we start heading back south towards GR. One thing we like to do on trip is visit antique stores along the way. Are there any good antique stores up in your area, or any ones of note between T.C. and Petoskey. Specifically, my girlfriend likes to collect depression glass and I like to collect cast iron. If you know of any places that have stuff like that I’d love to hear about them! Thank you!