Encouraging labor

I'm sure I'll get some of the "he will come when he wants to" comments but what are some of your favorite ways to encourage labor? My husband is shipping out soon after my due date and I really want him here for the birth and the 10 days after (His baby leave is only 10 days). 
I don't want to take some pill or do some ritual, I'm talking like your favorite dance or a food or drink. I'm seriously willing to do almost anything. I will be 38 weeks on Tuesday so I'm not trying to have a preterm baby, I would just really love for my husband to be here. I'm already in early labor, just looking to kind of help things along.