I prepared nothing in advance. Actually we had some g&a delivered, but it wasn't used.
I didn't have a pool either. But had vague ideas about the shower (which wasn't used).
I had my first 2 with tens and g&a and though it was dreadfully painful, I coped brilliantly even if I say so myself
I expected no.3 to be similar - I was stunned when I realised how much easier no.3 was and I genuinely put almost all of that down to simply being at home.
What I did do differently was read the tens manual and I also watched the instruction video - this meant that I put the tens on v. early in the labour.
We had a nice fire (it was winter) and the house was lovely and tidy, ds and dd1 were packed off to mums and I felt organised.
When midwife came and checked me it was obvious that I wasn't in the slightest dilated, we went for a walk (up some hills) and then I came back and spent the rest of the rest of the time straddling the loo (backwards iykwim). Dh mentioned g&a when I was in transition and midwives told him it wasn't necessary as I was obviously ready to push - I simply couldn't believe it- I was 'in agony' for such a short time compared to ds and dd1 (about 1 hour compared to 12 and 5 hrs).
I really think it was so much easier just because I was at home - the no stressy part of getting to hospital and not being checked all the time, all made a difference.
That was really just a ramble and not an answer to your q at all...
but my vague pain management plan was - shower, tens and g&a if needed.
eta: I also bought bradley and intended to read it....