Someone recently asked me to post my jig for making pocket hole plugs. I cut them on the bandsaw. The jig glides on the bandsaw's fence. Using a 3/8" dowel first cut the 15 degree angle by placing the dowel in the grooveon the bottom right. Slide the jig on the fence and cutting the dowel. Next place the piece of dowel you just cut off in the matching angle "mouth" up and to the left of the groove we just used. This cuts the back angle of the plug.
Super easy to use makes quick work of a length of dowel and I don't remember how many plugs per 36" dowel but I cut up a bunch whenever I need to and store the extras for next time.