If those low rpm motors get too complicated, pick up a used rotiserie motor...they are laying around thrift stores all over.
JB welded a small socket to the shft...fit nearly perfect, a piece of balsa is then fit into the socket and then whittled down to snugly fit into the but of the rod.
Instead of mounting the motor some where, I use a 4-5 pound small machinist vice that I got a Harbour Freight for a couple of bucks...it just sits flat on the table. Height is adjust with books.
It's a rig but has made it through 3 rods and a partial re-wrap.