No, there aren't any good craft shows in Cincinnati.
Rachel Bosh-Guerra from Fetopia and I have been trying to set up a craft show in Cincinnati for a long time. The problem is that neither one of us have a ton of time. Rachel runs Fetopia, Cincinnati Craft Mafia, and several other websites and is a mom, plus she's a rollergirl. I have a full time job, and we both run Plum of the Month.
Finding a good location has been impossible, and even if there was a good place to host a show, I worry about people coming and actually spending money. Cincinnati seems to be very label oriented. People here don't care if something is one of a kind or handmade. In fact, people in Cincinnati just want to have what everyone else has. Even stores like A Show of Hands have gone out of business.
You could join the Cincinnati Craft Mafia www.cincinnaticraft mafia.com
We get a lot of traffic on the website. At some point we are going to start buying advertising as a group, so the cost for the individual will be very affordable. There are shows nearby too, like Craftin' Outlaws in Columbus. I went last year, which was the first year, and it was pretty good.