New Baby Checklist

baby oh baby

I just found this New Baby Checklist on Pinterest. There are a few things on there that I didn't think of and I am doing last minute shopping.  I have a couple questions. Do you think a sound machine is necessary? Does it really help them sleep better? We will cosleep for 6 months. Also the car mirror, is that safe? One last thing, are you baby proofing now or later? I haven't purchased one single baby proofing item yet but in the movies they always do it before the baby arrives lol. Thanks!