I’ve seen a couple like ElloryJane posted, all powered by bearings and the movement of the Y axis.
I’ve also seen a user that made what appears to be a powered rotary module for the original, but there aren’t a lot of details in the post. My understanding is that several of the users that were working to understand the CAN bus network wanted to make powered rotary modules. That’s just my memory of the situation though, I haven’t kept up with the state of it.