Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
"Beige Stone", Tileable Texture.
Source V. Hartikainen
Colour version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
So tiny, just 7 by 7 pixels – but still so sexy. Ah yes.
Source Dmitriy Prodchenko
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Free tiled background with colorful stripes and white splatter.
Source V. Hartikainen
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
CC0 remixed from a drawing. Walter Crane, 1914, Firkin.
Source SliverKnight
A seamless pale yellow paper background with a pattern of animal tracks.
Source V. Hartikainen
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
An abstract texture of black metal pipes (seamless).
Source V. Hartikainen
The tile can be had by using shift+alt+i on the selected rectangle in Inkscape
Source Firkin
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
ZeroCC tileable moss texture, photographed and made by me. CC0
Source Sojan Janso
Prismatic Groovy Concentric Background 3
Source GDJ
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green