There was another thread just recently but will try to dig it up for you.
A few handy suggestions are ear plugs and eyemask for sleeping, for labouring in, maybe an oversized large t-shirt, or some comfy trackies or singlet is what I started in, a pashmina shawl was great for labouring in undies but having it around my shoulders was nice to keep a bit of modesty, when Dr's etc came in, lip balm, hard boiled lollies, gatorade type drinks, snacks for DH, my DH took in a mag and read that when things were slow so cards isn't a bad idea if things are going slow(or better still - stay at home til they pick up ) nice pj's, lots of cheap undies you can throw away when they get wrecked, massage oil, heat/cold pack and um that's all I can think of right now! There is an article on the mian site with a good list too!