non-herbal/medical ways of inducing.. (some are old wives tales)
drive down a bumpy road
nipple stimulation (when you're having sex make sure hubby is spending plenty of time on those nips!)
a cube of raw potatoe in a cup of cumin tea (no clue really, but it's a Mexican midwives tale from my understanding)
Blowing up baloons (supposedly builds intra-uterine pressure so baby is more applied to the cervix)
hot/cold on the fundus
You may give accupressure to the area of "Spleen 6", four fingers above the inner ankle on the shinbone. It is a tender spot and you may want to research this to do it correctly. Do this three times, 10 or 15 seconds at a time, resting in between, repeating every few minutes.
enema (but that's probably more invasive than you want)
Hope baby comes while daddy is home!