I use graph paper all the time, actually have a large pad of it that I take everywhere and I found great sites to print different sizes & shapes. I would be lost without my graph paper!
Pit is the only way I can keep my quilts ( contained) without sketching out the size of my quilt they seem to grow & grow...( my daughter's wedding quilt is 14 feet long! Couldnt seem to keep it from growing....that's when I learned to start on graph paper)