Satin Weave@2X #1045
Light CC BY-SA 3.0Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
More Textures
Fabric pattern 2 (colour 5) #2392
Fabric CC 0Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Background pattern 225 (colour 4) #2324
Green CC 0Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Prismatic Hypnotic Pattern No Background@2X #572
Noise CC 0Prismatic Hypnotic Pattern No Background
Source GDJ
Fabric of Squares #1095
Light CC BY-SA 3.0As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Vintage pattern 2 #2295
Yellow CC 0Inspired by a pattern seen on a public domain image of a very old tile. To get the unit cell, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Square ornament 37 #2177
Dark CC 0Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
Tile-able Black Paper Background #1076
Paper CC BY-SA 3.0A black tile-able background with paper-like texture.
Source V. Hartikainen
Dark Grunge Texture (Seamless) #1125
Grunge CC BY-SA 3.0Seamless Dark Grunge Texture. Here's a new grunge texture for use as a background.
Source V. Hartikainen
Dark Matter #601
Dark CC BY-SA 3.0The name is totally random, but hey, it sounds good.
Source Atle Mo
Checkered Light Emboss #280
Grid CC BY-SA 3.0Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Background pattern 308 #1872
Yellow CC 0Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Polaroid #187
Wall CC BY-SA 3.0Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
Light Paper Fibers@2X #836
Paper CC BY-SA 3.0More in the paper realm, this time with fibers.
Source Jorge Fuentes
Weave #733
Wall CC BY-SA 3.0Medium gray pattern with small strokes to give a weave effect.
Source Catherine
Green Fibers #91
Dark CC BY-SA 3.0The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
leaf seamless pattern #2262
Blue CC 0The image depicts a tiled seamless pattern.The tile represents four leaves aligned every 90 ° , which may look like a bird or a dragon .The original leaf design is from a Japanese old book.
Source Yamachem
Ribbon pattern 2 (version 2, colour 6) #2034
Pink CC 0The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin