Merely Cubed #589
 Grid  CC BY-SA 3.0

Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.

Source Etienne Rallion

 More Textures
Hoffman #1152
 Wall  CC BY-SA 3.0

Did anyone say The Hoff? This pattern is in no way related to Baywatch.

Source Josh Green

Dark Wall #1253
 Wall  CC 0

Zerro CC tillable texture of stones photographed and made by me. CC0

Source Sojan Janso

Sports car pattern #2442
 Red  CC 0

A seamless pattern formed from a sports car on clker.com. To get the tile, select the rectangle in Inkscape and use shift+alt+i.

Source Firkin

Concrete 2 Normal #1465
 Paper  CC 0

Ground style CC0 texture.

Source StruffelProductions

Brushed Aluminum 1 #1389
 Metal  CC 0

Gamedev - Metal Textures. CC0 License.

Source Davit Masia

Leather 1 #13
 Light  CC BY-SA 3.0

A leather pattern with a hint of yellow.

Source Atle Mo

My Little Plaid #332
 Light  CC BY-SA 3.0

Repeating squares overlapping.

Source Pete Fecteau

Paper 2 #2113
 Paper  CC 0

CC0 textures, backgrounds.

Source SliverKnight

Background pattern 214 #2377
 Blue  CC 0

A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.

Source Firkin

Floors & Dark Stone #1594
 Wall  CC 0

Floors-Tiles. CC0 License.

Source Unknow

Inspiration Geometry #1175
 Unknow  CC BY-SA 3.0

This one is rather fun and playful. The 2X could be used at 1X too!

Source Welsley

More Rough Wood 1 #1427
 Wood  CC 0

Gamedev - Wood Textures. CC0 License.

Source Davit Masia

Floral divider 2 #1924
 Dark  CC 0

From a drawing in 'A Guide to the Guildhall of the City of London', John Baddeley, 1898.

Source Firkin

Floral design 99 #1776
 Dark  CC 0

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

Source Firkin

Subtle Grunge #1040
 Light  CC BY-SA 3.0

A heavy hitter at 400x400px, but lovely still.

Source Breezi

Yellow Wood Planks Background #876
 Wood  CC BY-SA 3.0

This background pattern contains a texture of yellow wood planks. I think it looks quite original.

Source V. Hartikainen

Fabric 1 #9
 Light  CC BY-SA 3.0

Semi-light fabric pattern made out of random pixels in shades of gray.

Source Atle Mo

Diamond pattern #2285
 Brown  CC 0

From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

Seamless Cork Board Background #881
 Wood  CC BY-SA 3.0

Here's a seamless brown cork board background texture. Feel free to download or reshare if you like.

Source V. Hartikainen

[email protected] #664
 Paper  CC BY-SA 3.0

This is so subtle I hope you can see it! Tweak at will.

Source Alexandre Naud

Leaded glass background (colour 3) #2052
 Colorful  CC 0

Seamless pattern the tile.

Source Firkin

Floral divider 3 #1751
 Dark  CC 0

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

Source Firkin

Decorative divider 199 #2436
 Dark  CC 0

From a drawing in 'Jardyne's Wife', Charles Wills, 1891.

Source Firkin

[email protected] #718
 Dark  CC BY-SA 3.0

Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.

Source Janos Koos

Background pattern 306 (colour 5) #1879
 Colorful  CC 0

Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.

Source Firkin

Bark 1 Roughness #1469
 Paper  CC 0

Bark style CC0 texture.

Source StruffelProductions

White [email protected] #728
 Grid  CC BY-SA 3.0

A nice and simple white rotated tile pattern.

Source Another One

Mix & Gray Pattern #1635
 Metal  CC 0

Metal-Plain or Painted. CC0 License.

Source Unknow