As an engineer I love Quad ruled paper. It is great for making layout drawings of building gardens etc. and it makes graphing easy. This filler option is the least expensive one I have found especially when it was on sale.
I have many uses for graph paper - not just technical drawings for building project. I also use for drawings graphs for my calculus class. I use it so much I even take classnote on the paper too - just to save time. I also use it for Chem and Physics classes. Makes it alot easier to take class notes when teacher draws a graph or a sample problem on the board... It makes the notes simplier to go over later in reviewing because it neater and help make you more organized. Staple is a great place to get it because it much harder to find it the bigger stores.
Well I love this paper because it helps with homework. The lines help kids with organization issues to we'll line things up. It makes multi- digit multiplication easier as well as long division. It 's also just fun to draw on because you have the grid to help with proportion. The only down side is that the holes along the edge just rip so darn easy. That always seems to be the case with three hole punch paper though. So not really a big deal of us. We mostly use it as scratch paper for math homework.