Think I had mine packed by about 35 weeks last time (havent even thought about it this time though and I am 31 weeks)
I had a bag for me and a bag for the baby, so that it was easy for H to find the baby things as he got her bathed and dressed the first time.
I had cheap nighties from Asda to labour in and they went straight in the bin. I got dark underwear and pj trousers from Primark and wore vest tops as I found it so hot in the hospital. I took a light dressing gown just to cover up wih for walking around when visitors etc were in. I also got dressed during the day, just in joggies and vest tops, made me feel more human tbh.
I made sure H knew where to find more breast pads/mat towels in the house incase I ran out, which I did as ended up staying 3 nights.
Oh and I took a black towel for showering, meant it didnt get any obvious dirty marks on it!