Declutter your house
spend a bit of time doing this but don't get obsessive. your house will be cluttered up with baby stuff soon.
Watch boxsets, go to the cinema, go for a night out somewhere you won't be able to take the baby, go for nice relaxing afternoons in places you love particularly if you can't see yourself taking a baby there, relax and sleep when you can.
Sort through the clothes/bedding you have and give them a wash in non bio. Obviously get the crib ready and the pram and maybe a biuncer chair. Make sure you know how to attach the car seat. stock up.on nappies, breastpads, wipes, cotton wool, nappy sacs and nipple and nappy cream. Pack your hospital bag and get a list of contact numbers by the phone. Discuss with DP what you want to happen about visitors (i.e. who is visiting you in hospital/in first week etc. - make sure your expectations are the same and he hasn't invited james and Jane from work for the first week you are home)
if you are feeling really organised batch cook some meals but other wise just get loads of staple ingredients in like pasta and rice, frozen veg and meat, tins etc.
If you are sentimental buy yourself a baby book so that you can start filling it in as soon as baby is born.
Last thing i can think of is if you are planning to bfeed familiarise yourself with the local services. There will be a sure start centre nearby. The health visitor will probably visit you soon so ask them about what's on offer. In my area i got a leaflet and it included baby groups which i decided i would attend anyway but they are particularly useful if you need support with feeding.
sorry one more thing - make sure you are in agreement about the name. Choosing a name after the baby is born is stressful. I was tired and hormonal and it made the decision 10 times harder than if we had just settled on a name before - i include middle name(s) in this.