Medium gray pattern with small strokes to give a weave effect.
Source Catherine
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Green Background Pattern
Source V. Hartikainen
Prismatic Groovy Concentric Background
Source GDJ
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
A repeating background with dark brown stone-like texture and abstract pattern that looks like tree trunks.
Source V. Hartikainen
A nice looking light gray background pattern with diagonal stripes.
Source V. Hartikainen
Spice up your next school project with this icon background.
Source Swetha
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf