You could try inserting EPO (Evening Primrose Oil) capsules at night times (don't forget to wear a pad to bed!) as they help soften/ripen your cervix. And Rose Leaf Tea is supposed to be good too (to drink this time!).

Other than that, unless there's a good reason (ie: baby is distressed etc.) for them to induce you before you hit 42 weeks, simply don't let them. If you find it hard to say 'no' then just say 'yes' but don't turn up for your induction. You can always have ultrasounds to check on the functionality of your placenta.

Have you checked out the natural induction articles here?

Good luck