Congratulations on choosing a home birth! (sorry I sound a bit NCT!) I had one for my first baby 3 months ago and it was fab.
I got a birthing pool which was great for pain relief. Bought it as renting was just as expensive. We used a Bassine birthing pool and got all the extra bits with it, like tarpaulin and pumps. Checked out loads of deals and this was the best value IMO.
Make sure you have torch to hand (for looking up your fanjo), a mirror (again for fanjo inspection)
Tell your husband where all the towels are that are ok to use get covered in blood, or he will use the new, white Designer's Guild ones instead of the brown ones from the back of the airing cupboard
Dust sheets (as in painting and decorating). You can then get birthing partner to spread these over any precious bits of furniture your midwives might try to commandeer as fanjo-inspection-coach (in our case pale blue linen sofa).
Drinking straws. Little bottles of water (more in a min on that)
Bucket. In case you're sick.
Sieve for fishing things out of the birthing pool which you will then want to deposit in the bucket.
Biscuits and tea for midwives. You want them awake!
Snack for husband or you, ready made because you may feel sick.
Relaxing music. And think about your lighting.
Strong chair for hanging over/off.
Blanket for afterwards because you can feel very cold after you deliver if you get a little bit of shock.
Incontinance pads (not sure what for, we were told to get them. I had 10 in the packet and used 1 when my waters broke and 1 for bleeding after delivery and still have 7 left. Not sure what happened to the other one...)
Little bottle of water by the loo for squirting over fanjo when going for first wee (and all the other wees for next 10 days).
Get everything together in a big box, with any help sheets you want to use (for birthing positions etc) and your birth plan on top. Put stuff you'll need in the bathroom next to the loo (kitchen paper for dabbing, paper pants, maternity pads etc) in advance so you don't have to explain where/what they are to DH.
I set up a birthing area with a table for the midwife to use and chairs for us all to sit on. It was quite important this area was near the bathroom.
Well, that's all the practical stuff. It's a good idea to talk through your plans (with birthing partner) in advance and just relax and enjoy it. I also found sitting on the loo the most comfortable place to be just before I delivered
Best feeling finally going to bed at 6am with DH and our new baby.