45-Degree Fabric@2X #2
Fabric CC BY-SA 3.0Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
More Textures
Cross Stripes #47
Dark CC BY-SA 3.0Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Stacked Circles #673
Light CC BY-SA 3.0A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
Background pattern 227 (colour 5) #2310
Colorful CC 0A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Wine glass background #2054
Pink CC 0Remixed from an image on Pixabay uploaded by Prawny
Source Firkin
Background pattern 5 #224
Noise CC 0A pattern drawn in Paint.net and vectorized in Inkscape.
Source Firkin
"Dark Brick Wall", Background Pattern #1024
Stone CC BY-SA 3.0Like the name suggests, this background image consists of a pattern of dark bricks. It may be an option for you, if you are looking for something that looks like a brick wall for use as a background on web pages. It's not a masterpiece, but looks pretty nice when is tiled.
Source V. Hartikainen
Egg Shell #861
Light CC BY-SA 3.0It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
Prismatic Groovy Concentric Background 3 No Black@2X #460
Noise CC 0Prismatic Groovy Concentric Background 3 No Black
Source GDJ
Repeating Web Background (Dark Brown) #1079
Metal CC BY-SA 3.0This one has rusty dark brown texture.
Source V. Hartikainen
Absurdity@2X #826
Light CC BY-SA 3.0Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
60º lines #25
Light CC BY-SA 3.0Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
Vintage pattern #1957
Grid CC 0Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
Fabric 1@2X #10
Light CC BY-SA 3.0Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
Patterned metal plate 7 #2556
Metal CC 0From an image on opengameart.org shared by rubberduck.
Source Firkin
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
Prismatic Rounded Squares Grid 3 No Background #489
Noise CC 0Prismatic Rounded Squares Grid 3 No Background
Source GDJ
Hoffman@2X #1153
Wall CC BY-SA 3.0Did anyone say The Hoff? This pattern is in no way related to Baywatch.
Source Josh Green
Background pattern 333 #1741
Noise CC 0The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin