Photography by gratisography.com, http://www.pexels.com/
Design by Beabe Thompson, Copyright 2014
One of the things that you can add to your NaNoWriMo baby is a cover. Now if you have an idea of what you want your novel to be about, generally speaking, now's a good time to do it instead of wasting valuable writing time later during November.
There are free photo stock websites where one can download for free or a donation, so don't waste money on an expensive bit of photostock unless you're feeling flush with moola. Then register at PicMonkey and upload the photo, using their text and effects pattern, but limit your cover to less than 1 MB or it won't load to NaNoWriMo.
PicMonkey is highly addictive, so don't lose yourself there and miss out on writing time. Here's the website:
Just remember to not get overly complicated with background or font, and have fun.