This way you'll also feel a part of preparing for baby. It's hard when you can't go out and do your own shopping. I was able to work full-time despite being on bedrest the last two months of my pregnancy. Prop them all around yourself for ultimate comfort. Stretching often is extremely important too.
Massage is another fantastic comfort.
Have DH or one of your children give you a nice massage. In the summer, consider ventilation and air conditioning. If you happen to own one of those step aerobics steps, have DH place it next to your bed. Made me feel like a real person, and she cut it in a style that looked good even without me doing much to it. They really help you stay comfortable.