Our dreams are firsthand creations, rather than residues of waking life. We have the capacity for infinite creativity; at least while dreaming, we partake of the power of the Spirit, the infinite Godhead that creates the cosmos.
I usually write away from home, in coffee shops, on trains, on planes, in friends' houses. I like places where there's stuff going on that you can lift your eyes, see something interesting, overhear a conversation.