Here's my list, have I missed any? (NB - NONE worked last 3 times - but you gotta love a trier!)
hot curry
sex
solo sex (releases endorphins)
oral sex (prostaglandins taken orally)
raspberry leaf tea
homeopathy remedies (cimifuga and caullophyllum)
reflexology
castor oil (gives you hideous cramps and squits)
Acupuncture
Skipping(with a rope)
car journey over bumps
trampoline
fresh pineapple (to ripen cervix)
clary sage oil ( in bath or rub wtih oil into bump)
oil of evening primrose capsules