Free downloadable and printable PDFs for graph/grid paper

Curbly member DIY Maven points us in the direction of a site offering free downloadable PDfs for graph and grid paper. Something to keep in mind when your middle school student comes home from school with a math homework needing to be completed on graph paper which he forgot in class. And because I prefer my Field Notes notebooks have graph paper. And because I'm planning to quit my dependence/addiction to the notebooks, replacing them with a more
Earth friendly/DIY version made from my cereal boxes, I'll be able to fill my newly crafted journals with plenty of graph paper printed on recycled junk mail. So exciting!