From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i
Source Firkin
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Produced using the clouds, flames and glass blocks plug-ins in Paint.net and the resulting .PNG vectorised with Vector Magic.
Source Firkin
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
Zero CC tileable ground cracked, crackled, texture, made by me.
Source Sojan Janso
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
An abstract Background pattern of purple twisty patterns.
Source TikiGiki
To get the repeating unit, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
A seamless paper background colored in pale yellow.
Source V. Hartikainen
Sharp pixel pattern, just like the good old days.
Source Paridhi
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers