I found a site for printing out your own graph paper while I was looking for something else. The site has hexagon graph paper (scroll down a bit for this), triangle graph paper, standard graph paper and lots of other choices. Its free, very easy to work with, and very quick to make the size that you want.
http://incompetech.com/graphpaper/
Print out all the pages you need, cut them out and you're ready to sew. Have fun!
-Christine