Good thread! Wish I'd read this before...

1) Yeap a baby bath. Waste of money!The sink/big bath option is easiest I think anyway
2) A change table/mat - just use the bed (if they are too young to roll off) or floor
3) One of those nappy bins (forgotten the name, but they seal the nappies like a big sausage), although I did use this a fair bit in the early days, and when #2 arrives I might use it again in the new house when we will be downstairs mostly during the day.