From a drawing of the coat of arms of the Ottoman Empire on Wikimedia.
Source Firkin
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Dark wooden pattern, given the subtle treatment. based on texture from Cloaks.
Zero CC tileable dry grass texture, photographed and made by me. CC0
Source Sojan Janso
I’m not going to lie – if you submit something with the words Norwegian and Rose in it, it’s likely I’ll publish it.
Source Fredrik Scheide
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
Here's a repeatable texture that resembles a light green concrete wall or something similar.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Wasn't satisfied with the original's colouring. Too much component transfer and colormatrixes yet the results are lacking a bit. So this time it is a simple black to transparent fade, making it possible remixing easily once there will be other blending modes supported as well. Probably in inkscape 0.92.
Source Lazur URH