From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
Kaleidoscope Prismatic Abstract No Background
Source GDJ
From a drawing in 'Picturesque New Guinea', J Lindt, 1887.
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
Looks like an old wall. I guess that’s it then?
Source Viahorizon
Prismatic Chevrons Pattern 5 With Background
Source GDJ
We have some linen patterns here, but none that are stressed. Until now.
Source Jordan Pittman
Lovely pattern with splattered vintage speckles.
Source David Pomfret
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Here's a seamless brown cork board background texture. Feel free to download or reshare if you like.
Source V. Hartikainen
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A free background image with a seamless texture of cardboard. This texture of cardboard looks quite realistic, especially when is actually tiled.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Prismatic Groovy Concentric Background
Source GDJ
Honestly, who does not like a little pipe and mustache?
Source Luca Errico
Prismatic Floral Background No Black
Source GDJ