This is life-saving!!! I'd have spent countless hours manually creating mine and it'd still not be this perfect!
Papers on Demand!
Papers on Demand lets designers, artists, draftsmen design the right paper for their drawing needs. You can set grid and margins, and choose between numerous grid types: hexagonal, polka grids, isometric, pseudo-isometric with 1:2 ratio, as well as regular square grids.
The cell size indicates the length of a figure's side. With pseudo-isometry, the cell size indicates the length of a rhombus' vertical diagonal.
Pseudo- and real isometry
If you want pixel-art, pick pseudo-isometry.
Pseudo-isometry differs from usual isometry. The first one uses a grid size so that horizontal lines go two pixels to the side and one upwards and downwards. These are used in pixel art and in game design. The second is the real isometric grid, in which the angle between all axes (X, Y, Z) is 120 °. It is used in drafting and architecture.