Old Husks #631
 Wall  CC BY-SA 3.0

A bit of scratched up grayness. Always good.

Source Josh Green

 More Textures
Delis #1673
 Paper  CC 0

Paper-Wallpaper. CC0 License.

Source Unknow

Prismatic Arrows [email protected] #802
 Noise  CC 0

Prismatic Arrows Background

Source GDJ

Floral design 87 #1886
 Dark  CC 0

From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.

Source Firkin

"Black Stripes", Background Pattern #966
 Stripes  CC BY-SA 3.0

A light gray fabric pattern with faded vertical stripes.

Source V. Hartikainen

Stone Wall & Red #1505
 Red  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Prismatic Geometric Tessellation Pattern No [email protected] #552
 Noise  CC 0

Prismatic Geometric Tessellation Pattern No Background

Source GDJ

Tree and bird pattern #1983
 Dark  CC 0

From a drawing in 'Line and form', Walter Crane, 1914.

Source Firkin

Prismatic Isometric Cube Wireframe Pattern No [email protected] #500
 Light  CC 0

Prismatic Isometric Cube Wireframe Pattern No Background

Source GDJ

Leafy frame 31 #1726
 Green  CC 0

A frame using leaves from an image that was uploaded to Pixabay by mayapujiati

Source Firkin

Leafy pattern 12 (colour) #1762
 Red  CC 0

From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.

Source Firkin

Asfault 7 #1386
 Dark  CC 0

Gamedev - Asphalt textures. CC0 License.

Source Davit Masia

[email protected] #337
 Dark  CC BY-SA 3.0

Love the style on this one, very fresh. Diagonal diamond pattern. Get it?

Source INS

Retro Squares Background [email protected] #796
 Noise  CC 0

Retro Squares Background 8

Source GDJ

Zig-zag pattern #2418
 Grid  CC 0

A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.

Source Firkin

[email protected] #644
 Dark  CC BY-SA 3.0

Classy golf-pants pattern, or crossed stripes if you will.

Source Will Monson

Tessellation 16 #2215
 Yellow  CC 0

The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.

Source Firkin

Background pattern 306 (colour 4) #1877
 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

Tex2res1 #721
 Fabric  CC BY-SA 3.0

Number 3 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.

Source Janos Koos

Decorative divider 236 #2090
 Dark  CC 0

From a drawing in 'The Quiver of Love', Walter Crane, 1876

Source Firkin

Starring #585
 Dark  CC BY-SA 3.0

If you need stars, this is the one to get.

Source Agus Riyadi

Floral background 22 #1780
 Dark  CC 0

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

Source Firkin

"Colorful Stripes", Diagonally Striped Background #903
 Stripes  CC BY-SA 3.0

This background pattern contains worn out colorful stripes as a texture.

Source V. Hartikainen

Prismatic Rounded Squares Grid 4 No [email protected] #492
 Noise  CC 0

Prismatic Rounded Squares Grid 4 No Background

Source GDJ

Floors & Wood #1614
 Wall  CC 0

Floors-Tiles. CC0 License.

Source Unknow

Dirty Old Black Shirt #853
 Dark  CC BY-SA 3.0

Used in small doses, this could be a nice subtle pattern. Used on a large surface, it’s dirty!

Source Paul Reulat

Retro Circles Background 6 #428
 Noise  CC 0

Retro Circles Background 6

Source GDJ

Background pattern 336 (colour 3) #1719
 Blue  CC 0

Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.

Source Firkin

Congruent Pentagon #1307
 Unknow  CC BY-SA 3.0

Inspired by this, I came up with this pattern. Madness!

Source Atle Mo