A bathing seat that you put in an adult bath rather than a baby bath, I had one from Mothercare than had a sturdy frame but a fabric seat that you could bung in the washing machine, have DH lots of confidence to do the baths as I had had a c-section.
Another vote for swaddle wraps, I also have the Summer Infant ones.
Also, grab a pack of terry nappy squares (I got mine in Tesco). They're more absorbent than muslins and very handy to keep around the changing area to mop up big messes. I went back and bought two more packs in the first week after she was born!
Stylfile baby nail clippers - by Tom Pellerau (sp) from the Apprentice a few years back. DD's nails grow so quickly, baby nail scissors don't work, just a file takes forever. Quick snip with these (they have a peep hole so you can see what you're doing) and file the edges with the dinky curved nail file that comes with them, and job done. Buy at Boots, supermarket or Amazon.
A morrck travel blanket dd was always snug but safe in her car seat as the straps fitted snugly without bulky clothes getting in the way. If she was asleep and I carried her seat inside I could just unwrap her without waking her up.