What are some things that are safe to trigger labor?

I am being induced next Thursday (7th) but would like to start labor naturally if possible. I am 1cm dialated and my doctor told me today that my cervix is thinning out really good. I have been bouncing on an exercise ball a lot and I think that is what has helped thin my cervix out a little bit. I just want some more suggestions as to how to get this labor started without having to be induced! Thanks in advance!