Nipple stimulation sometimes helps. (Nice if you and your partner enjoy it)
Keep mobile, walking about etc.
Rock in a rocking chair.
If baby is 'back to back' with you, going onto hands and knees helps.
Good Luck
Walking is very good.
It is very beneficial to change positions throughout the labor process. An upright position allows gravity to speed the labor process along. Familiarize yourself with the Best Positions for Active Labor in advance.