A comeback for you: the popular Escheresque, now in black.
Source Patten
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
Found on the ground in french cafe in kunming, Yunnan, china
Source Rejon
From a drawing in 'Codogno e il suo territorio nella cronaca e nella storia'', Gio and Giarella Cairo, 1897.
Source Firkin
Abstract Ellipses Background Grayscale
Source GDJ
The image depicts a seamless pattern of the design which includes a stylized lotus and a stylized crane.I referred to the original image in a book which is into public domain.
Source Yamachem
A pattern formed from repeated instances of corner decoration 8. To get the basic tile select the rectangle in Inkscape and use shift+alt+i
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. A version of the original with random colors.
Source Firkin
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
Prismatic Geometric Pattern Background No Black
Source GDJ
A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
Here's a quite bright pink background pattern for use on websites. It doesn't look like a real fur, but it definitely resembles one.
Source V. Hartikainen
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
This makes me wanna shoot some pool! Sweet green pool table pattern.
Source Caveman
Prismatic Groovy Concentric Background 3
Source GDJ
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Derived from a drawing in 'Historiske Afhandlinger', Adolf Jorgensen, 1898.
Source Firkin
Someone was asking about how to achieve a fur pattern at #inkscape irc so tried to make a filter on it. Flood filled fractal noises rigged together. May someone find a good use for these.
Source Lazur URH
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
A seamless paper background colored in pale yellow.
Source V. Hartikainen