When I was at home I was mostly on the ball, on all fours on the bed or sitting on the toilet. When the contractions were at their worst at home all I could do was lean over and rest my forehead on the kitchen counter.
When I was at the hospital I had an epidural and was confined to the bed. When it was working I tried to lie quietly and rest. When it stopped working and they wouldn't redo it (at first) I spent two hours sitting up, slightly hunched over with one leg tucked almost under me and the other hanging off the bed.
What positions did you labor in/find most effective?