What can I do to make my wife's pregnancy easier/more comfortable/better for her?

Wife and I are expecting our first. I've been reading a lot and figured I'd ask those that have gone through it. What can I do as the husband to make my wife's time being pregnant easier/more comfortable/better? What advice do you wish you had as a man in your first pregnancy or what do you wish your spouse would have done to make the whole thing as pleasant as possible.

-edit- I've read every single response and up-voted all of you. I can't thank you enough for all the kind words, tips and encouragement. I've got a massive Notes file on my iPhone now with links to books/pillows/teas/etc.

My wife knows my reddit username and just happened to find this post in my history and had a pretty good cry about it last night haha. She and I read through all of your comments and she gave me notes on things she thought pertained to her and what didn't so this has been immensely helpful. I think we're gonna make it thanks to all of you. I'm already the primary chores person in our household, my parents raised me on the belief that no one person should do all of the house maintenance. Plus, I lived on my own for a few years and am pretty particular on how I like things cleaned.

Again, thank you all. Now if you'll excuse me, I have books to read and pillows to buy!