This one is amazing, truly original. Go use it!
Source Viahorizon
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
Spice up your next school project with this icon background.
Source Swetha
Traced from a drawing in 'Household Stories from the Collection of the Brothers Grimm', Wilhelm Carl Grimm , 1882.
Source Firkin
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Classic 45-degree pattern, light version.
Source Luke McDonald
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Inspired by this, I came up with this pattern. Madness!
Source Atle Mo
A version without colours blended together to give a different look.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
8 by 8 pixels, and just what the title says.
Source pixilated
Seamless Dark Grunge Texture. Here's a new grunge texture for use as a background.
Source V. Hartikainen
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso