This is a remix of the Game Prototyping Stencil, except it's now designed to hook into and stay attached to the rings of a wire bound notebook. This prevents it from getting lost by sliding out of the binder. As in the original print, this will work well with 5mm grid paper, but also works nicely with dot grid paper as well.
If you'd like to use the same dot grid notebook I used here, you can pick one up from Amazon. :)
The author remixed this model.