Had a baby bath for both DD & DS, but didn't use it no where near as long for DS, he much preferred to be in the big bath so he could stretch out properly & also liked to interact with his big sister..
I had a bouncer for both of them & it was a total godsend, I got more then my moneys worth out of their bouncers, that's for sure
I ended up with such a overload of stuff for DD, that just recently when I pulled it all out, there is still price tags on quite abit, whereas with DS, I never ever brought unncessary things, cause I learnt first time round what I'd need & not need.. Though I think with your first, you just buy everything cause your so excited!