Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Prismatic Geometric Pattern Background 2
Source GDJ
Remixed from a PNG that was uploaded to Pixabay by gingertea
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
The tile this is based on was adapted from an image that was uploaded to Pixabay by frolicsomepl. It can be had in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
A black tile-able background with paper-like texture.
Source V. Hartikainen
It looks very nice I think.
Source V. Hartikainen
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
The image depicts a seamless pattern made using a bird's face.
Source Yamachem
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
A new take on the black linen pattern. Softer this time.
Source Atle Mo
Prismatic Abstract Line Art Pattern Background
Source GDJ
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Derived from a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin