We bought pretty neutral sleepsuits for DD and we're reusing them now for baby #2. I know the sex, DH doesn't...
We initially bought suits in sizes 0-3, but when DD was born she was 8lbs and swimming in the suits, so we went out and bought a couple sets of newborn sized suits that she wore for about 2 months. DD was on the 90th centile for everything except head circumference and she manages to wear most clothes well past their guideline of usage.
We used a baby bath for DD, which she was using until she was about 18 months - per her preference. We got it as a set from Mothercare with a towel and top & tail bowl. Now she uses the bath at our house and uses the kitchen sink (sits on draining board / in the sink depending on her mood at in-laws as their bathroom and tub (with shower door thingie) layout render giving her a bath there useless.
My in-laws bought their baby bath (identical to ours) for £1 secondhand off a market stall.
If you go to buy half the stuff on the lists try to find items that multi-task or transition for longer use it not only saves money, but space in the home. ie) our baby monitor also has a room thermometer built in which we can set the alarm if temps drop too low or go too high).
May is ages away!! (Or at least that's what I'm telling myself.) I'm due in June and I'm not buying anything for now. I had to be forced to even buy maternity clothes. (I'm just nervous.)
With my first pregnancy my MIL told us it was bad luck to have anything in the house before the baby was born (well too soon anyway - she's very superstitious), so we didn't get most pieces of furniture until a month or so before DD was born nor decorate her room, although she didn't move into her room until she was about 8 months old. We bought pieces as needed, so only had a Moses basket to start with, then bought Cot when DD was about 7 months, an inflatable bed in preparation for a "big girl bed" (23 months) and now awaiting delivery of her "big girl bed" (25 mos).