I've done the bum patting, rocking, rocking in different rhythms, sometimes dancing, sometimes
fit ball bouncing, we had an elvis song he loved that worked for months while we rocked him, and if he seemed to fight sleep in my arms, I used a «pattern break» — something you'd be aware of I think, as you are quite scientific.
The showers are generally just big enough for the
ball to
fit in, then the birthing mama can sit and
bounce on her
ball while the wonderful warm water runs over her body.