Natural ways to start labor?

Not necessarily to start labor right away... But instead I'm looking for ways to prepare my body for labor to start.

I heard that walkig everyday for the weeks leading up to labor helps the baby drop which is needed to lose the mucas plug and dialate.

Are there other old wives tales or theories are effective ways to prep or start labor. Either right away or over the period of a few weeks.

I really want to go into labor on my own... I don't want to be induced or get pitocin.