This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
From a drawing in 'Hyde Park from Domesday-Book to date', John Ashton, 1896.
Source Firkin
This background has abstract texture with some similarities to wood.
Source V. Hartikainen
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Continuing the geometric trend, here is one more.
Source Mike Warner
Dark, crisp and subtle. Tiny black lines on top of some noise.
Source Wilmotte Bastien
Abstract Tiled Background Extended 8
Source GDJ
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
A seamless paper background colored in pale yellow.
Source V. Hartikainen
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
This makes me wanna shoot some pool! Sweet green pool table pattern.
Source Caveman
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
This is the remix of an Openclipart clipart called "Maze" uploaded by "any_ono_mous".Thanks.This is a seamless pattern of a maze.
Source Yamachem
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin