Andy's does not host open jams.

You can drum along to the music at Kira's Oasis up in Centerville. Her haflas are open dance nights, not drum circles, so you would just be playing along to canned music. But other drummers show up and do it, so it could be cool for networking.

Gaiananda is hosting a hafla on Friday at their studio, the Center for World Rhythms and Music. Check their tribe for the details as to whether or not it will have any open drumming or if they have that kind of stuff there.

Anaya Gypsy doesn't do this kind of thing either.

Have you checked the Cincinnati Bellydance tribe? Or the Cincinnati tribe might get some bites, though traffic there is almost nonexistant.