The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
A seamless pattern formed from background pattern 102
Source Firkin
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Non-seamless pattern drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
More carbon fiber for your collections. This time in white or semi-dark gray.
Source Badhon Ebrahim
Zero CC tileable ground (#2) cracked, crackled texture, made by me. CC0
Source Sojan Janso
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A seamless pattern formed from a modified version of rwwgub's tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Background pattern made in "Grunge-Like" style. Available in both SVG and JPG formats. Edit to your needs then click the download button.
Source V. Hartikainen
Adapted from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Remixed from a drawing in 'Some account of the Worshipful Company of Ironmongers', John Nicholl, 1866.
Source Firkin
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock