Gray [email protected] #914
 Light  CC BY-SA 3.0

Some more diagonal lines and noise, because you know you want it.

Source Atle Mo

 More Textures
Stardust #1209
 Dark  CC BY-SA 3.0

Everyone needs some stardust. Sprinkle it on your next project.

Source Atle Mo

Background pattern 252 (colour) #2161
 Colorful  CC 0

Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.

Source Firkin

Skeletal [email protected] #932
 Light  CC BY-SA 3.0

Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!

Source Angelica

Gloomy Stripes #994
 Stripes  CC BY-SA 3.0

A dark striped seamless pattern suitable for use as a background on websites.

Source V. Hartikainen

Abstract Stars Geometric Pattern Prismatic No Background #384
 Noise  CC 0

Abstract Stars Geometric Pattern Prismatic No Background

Source GDJ

Prismatic Dots Background [email protected] #512
 Dark  CC 0

Prismatic Dots Background 6

Source GDJ

Decorative divider 246 #2078
 Dark  CC 0

From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.

Source Firkin

White [email protected] #640
 Fabric  CC BY-SA 3.0

I took the liberty of using Dmitry’s pattern and made a version without perforation.

Source Atle Mo

cloth texture 02 #2449
 Fabric  CC 0

This is a dark-red seamless cloth texture.

Source Yamachem

Gravel 3 Roughness #1472
 Dark  CC 0

Gravel style CC0 texture.

Source StruffelProductions

P5 #1113
 Light  CC BY-SA 3.0

Number five from the same submitter, makes my job easy.

Source Dima Shiper

Squairy #1138
 Light  CC BY-SA 3.0

Super tiny dots and all sorts of great stuff.

Source Newbury

Floral background 17 (colour 3) #1849
 Blue  CC 0

Remixed from a JPG that was uploaded to Pixabay by theasad121

Source Firkin

Leafy pattern #2335
 Dark  CC 0

To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.

Source Firkin

Abstract Arbitrary Geometric Background #497
 Noise  CC 0

Abstract Arbitrary Geometric Background derived from an image on Pixabay.

Source GDJ

Colorful Floral Background 3 No Black #485
 Light  CC 0

Colorful Floral Background 3 No Black

Source GDJ

Floral divider 6 #1748
 Dark  CC 0

From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.

Source Firkin

Background pattern 201 (colour 3) #2493
 Grid  CC 0

A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.

Source Firkin

Mix & Black Pattern #1633
 Metal  CC 0

Metal-Plain or Painted. CC0 License.

Source Unknow

Decorative divider 232 #2148
 Dark  CC 0

From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.

Source Firkin

Seamless Wood Pattern #889
 Wood  CC BY-SA 3.0

A seamlessly repeating background pattern of wood. The image is procedurally generated, and, I think, it's turned out quite well.

Source V. Hartikainen

White [email protected] #772
 Wall  CC BY-SA 3.0

A huge one at 800x600px. Made from a photo I took going home after work.

Source Atle Mo

Prismatic Groovy Concentric Background 5 No Black #467
 Dark  CC 0

Prismatic Groovy Concentric Background 5 No Black

Source GDJ

Random Grey Variations #69
 Stripes  CC BY-SA 3.0

Stefan is hard at work, this time with a funky pattern of squares.

Source Stefan Aleksić

Txture #757
 Dark  CC BY-SA 3.0

Dark, lines, noise, tactile. You get the drift.

Source Anatoli Nicolae

Floral background 21 (colour) #1784
 Dark  CC 0

From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.

Source Firkin

Background pattern 309 (colour 2) #1865
 Blue  CC 0

Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.

Source Firkin

Hexabump #953
 Dark  CC BY-SA 3.0

Hexagonal dark 3D pattern. What more can you ask for?

Source Norbert Levajsics

Tileable Wood #655
 Wood  CC BY-SA 3.0

Not so subtle. These tileable wood patterns are very useful.

Source Elemis

Background pattern 242 (colour 5) #2200
 Blue  CC 0

Random colour tile.

Source Firkin