Cardboard #278
Paper CC BY-SA 3.0A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
More Textures
Wide Rectangles #699
Wall CC BY-SA 3.0Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
First Aid Kit@2X #702
Fabric CC BY-SA 3.0No, not the band but the pattern. Simple squares in gray tones, of course.
Source Atle Mo
Patterned metal plate 7 #2556
Metal CC 0From an image on opengameart.org shared by rubberduck.
Source Firkin
Hexellence #705
Light CC BY-SA 3.0Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
Black Linen@2X #64
Dark CC BY-SA 3.0In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
Background pattern 320 #1830
Pink CC 0Formed by distorting a JPG from PublicDomainPictures
Source Firkin
Background pattern 223 (colour 4) #2350
Pink CC 0Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Background pattern 332 #1742
Noise CC 0The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Diagonal Waves@2X #1007
Gray CC BY-SA 3.0It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Video Game Website Background #1327
Green CC BY-SA 3.0This background pattern has futuristic look. So, maybe it could be used on websites or blogs dedicated to video games?!
Source V. Hartikainen
Prismatic Curved Diamond Pattern 4 No Background #541
Diamond CC 0Prismatic Curved Diamond Pattern 4 No Background
Source GDJ
Wavy background #2017
Green CC 0A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Decorative divider 286 #1824
Dark CC 0Remixed from a PNG that was uploaded to Pixabay by VictorianLady
Source Firkin
Striped Fabric Pattern #998
Stripes CC BY-SA 3.0A light gray background pattern with seamless fabric-like texture and almost unnoticeable stripes.
Source V. Hartikainen
Floral background 22 (colour) #1779
Green CC 0From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Tileable Wood@2X #656
Wood CC BY-SA 3.0Not so subtle. These tileable wood patterns are very useful.
Source Elemis
Candyhole@2X #357
Light CC BY-SA 3.0It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
"Black Chains", Gloomy Background #1082
Metal CC BY-SA 3.0A repeating gloomy background image. This one consists of a pattern of black chains layered on top of a dark textured background.
Source V. Hartikainen
Red & Black Well #1260
Wall CC 0Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
White Wall 2 #1020
Wall CC BY-SA 3.0A new one called white wall, not by me this time.
Source Yuji Honzawa