Those baby nail clippers are lethal. I file his nails with an emery board, no risk of nicking him (have never tried nibbling them myself)
And yeah, a 2nd bouncer/chair. When you are bringing them around the house when you're doing you're bits and pieces, you need another place to plonk them upstairs. And little toys in different areas as well to keep them amused (once they are old enough to actually see things)
I think romper/play suits (the little suits with short arms and legs - they are outer wear, not vests) are only of any use when it's really really hot out. I have about 10 that people gave me and I used two of them once.