You can alter the environment with your birth plan. You can think about it in terms of how to create the ideal birth space. Do you need to have certain things with you like a favorite photo, a pillow, or your clothes? These are all familiar items to help you feel more at home, particularly if you are giving birth in a hospital.
Some hospitals have requirements for what you can and cannot bring. For example, you probably can't bring candles with flames, but you could make substitutions. One such substitution would be the electronic flickering, flameless candles.
Until then, you can look through these images from various labors and see what other moms chose to have surrounding them for comfort.