I feel like there are still many things on this list, but I'm actually not so worried about them any more. Still working on getting through them, but I feel more relaxed about it. 
For birth specifically:
Buy the few remaining things on our midwives' list
Put all the birth supplies in the same place
Pack a hospital bag for just in case
Get feedback on backup hospital birth plan from midwives, and print multiple copies (put in hospital bag)
Buy hose and adapter for filling up birth tub (and liner?)
Practice setting up and draining tub I'm not really worried about the draining part any more, but do want to make sure we understand how the pump inflates the pool!
Stock foods for labor (for me and birth team)
To buy:
Car seat!!! We had it on the baby shower list just in case, but now I need to go click the button myself. 
Dresser that can also work as a changing table
Few remaining things from registry that would be nice to have (absorbent blankets, etc.)
To do:
Make appointment to meet the pediatrician we think we want to use, and go meet her - [she moved!!
now we have to figure out who else we might want to go to]
Practice diaper folds/changing
Get a diapering space set up (where are the clean diapers going to go? Dirty ones? Wipes?)
Cut flannel into baby wipes, and maybe sew edges (if my sewing machine works, and if I have time)
File taxes
Send baby shower TY cards
Move our bed so we have room for the pack and play or sidecar
Watch "The Happiest Baby on the Block" (I read the book, but would like my husband to see the little film, so he has some ideas of ways one can soothe a baby!)
Follow Mothering