I did EPO orally and vaginally from 37 weeks. Wear a pantyliner, or old panties if you are going to insert the EPO vaginally though.
I was drinking lots and lots of my Belly Tea, which was mostly just RRL and Nettle, might of had Black Cohosh in it. I had purchased a LabourReady tea which had both Black and Blue Cohoshes in it, but after reading a bit about the anecdotal effects of Blue Cohosh, decided to not take it, since some of the anecdotal symptoms were heart related in both mom and baby, and I have a mild heart condition.
I was doing a million squats a day, and bouncing on the birth ball. This was the only time I could feel the baby's head on my cervix, since DD wasn't engaged at all before labour, so I did it a lot.
Daily orgasms. Sometimes multiple times a day.
Walking at least 45 minutes a day.
And finally, intercourse, which I am convinced kick started my labour with DD, but I think mostly because somehow the activity broke the bag of waters and that triggered labour. I was 40w4d.
I also had my membranes stripped a couple of times, weeks 39 and 40.
This time I am going to do all those things, plus have DD nurse as much as she wants, plus I am going to try ingesting my prostaglandins. I don't think I'll do any additional herbs/supplements, though perhaps if this baby goes beyond 40w4d, I might decide to expand my repertoire a bit.
ETA: Oh, and I'm 37 weeks now, and am doing some of these things already, but am waiting on the EPO and my oral prostaglandins until we are a little more unpacked and ready for baby around here. I am not in quite the same hurry this time around.