Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen
An abstract texture of water. It's not perfect, but will do. You may download if you like it.
Source V. Hartikainen
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Prismatic Abstract Geometric Background 4
Source GDJ
A white version of the very popular linen pattern.
Source Ant Ekşiler
Zero CC tileable grass texture, photographed and made by me. CC0
Source Sojan Janso
Remixed from a drawing in 'Очерки Русской Исторіи въ памятникахъ быта', Petr Polevoi, 1879.
Source Firkin
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
A seamless pattern formed from a tile made from page ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen