a simplistic black-and-white line pattern that can be tiled and looped infinitely
bonus usage tips since this isn't transparent:

to color on the white background: set this image's layer to Multiply, and color on a layer underneath it
to color on the black lines: set a layer above this one on Add, and color on that

to remove white background or black lines and turn the image transparent, use an Extracting Lines tool, a Channel Operation tool, or select the white background and either delete it or invert the selection and delete the black lines

Tribe Line by wildefan1776 is licensed under a Creative Commons Attribution 4.0 International License.