Ice [email protected] #638
 Paper  CC BY-SA 3.0

I asked Gjermund if he could make a pattern for us – result!

Source Gjermund Gustavsen

 More Textures
"Beige Stone", Tileable Texture #1025
 Stone  CC BY-SA 3.0

"Beige Stone", Tileable Texture.

Source V. Hartikainen

P5 #1113
 Light  CC BY-SA 3.0

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

Source Dima Shiper

Background pattern 236 #2249
 Dark  CC 0

Seamless pattern the basic tile for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

Flying swan pattern #1978
 Blue  CC 0

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

Source Firkin

Fabric of Squares #1095
 Light  CC BY-SA 3.0

As far as fabric patterns goes, this is quite crisp.

Source Heliodor Jalba

Mooning #1140
 Gray  CC BY-SA 3.0

The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?

Source Joel Klein

First Aid [email protected] #702
 Fabric  CC BY-SA 3.0

No, not the band but the pattern. Simple squares in gray tones, of course.

Source Atle Mo

Leafy divider (colour) #1759
 Green  CC 0

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

Source Firkin

Background pattern 220 #2360
 Dark  CC 0

A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Derived from a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.

Source Firkin

Background cubic #238
 Dark  CC 0

Fondo en falsa perpectiva

Source Roshellin

Colorful Stripes Background #992
 Stripes  CC BY-SA 3.0

Free tiled background with colorful stripes and white splatter.

Source V. Hartikainen

Concretia 3 #1410
 Gray  CC 0

Gamedev - Concrete Textures. CC0 License.

Source Davit Masia

Decorative divider 218 #2232
 Dark  CC 0

Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.

Source Firkin

Blue & Fissure & Cube #1702
 Wall  CC 0

Background Wall, Art Abstract, Blue Well & CC0 texture.

Source Ractapopulous

Fruit decorative divider #1911
 Colorful  CC 0

Vector version of a png that was uploaded to Pixabay by pencilparker

Source Firkin

Brick [email protected] #1147
 Wall  CC BY-SA 3.0

One more brick pattern. A bit more depth to this one.

Source Benjamin Ward

Prismatic Geometric Tessellation Pattern 3 No Background #555
 Noise  CC 0

Prismatic Geometric Tessellation Pattern 3 No Background

Source GDJ

Brushed Aluminum #1388
 Metal  CC 0

Gamedev - Metal Textures. CC0 License.

Source Davit Masia

Background pattern 223 (colour 2) #2352
 Blue  CC 0

Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.

Source Firkin

Fence 9 (colour 2) #2194
 Wood  CC 0

A browner version of the original weathered fence texture.

Source Firkin

Floors #1590
 Wall  CC 0

Floors-Tiles. CC0 License.

Source Unknow

Background pattern 277 (colour) #2031
 Orange  CC 0

A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.

Source Firkin

Blue & Dark Well #1703
 Wall  CC 0

Background Wall, Art Abstract, Blue Well & CC0 texture.

Source Ractapopulous

White Wave #681
 Stripes  CC BY-SA 3.0

Light and tiny, just the way you like it.

Source Rohit Arun Rao

Hearts pattern #1822
 Pink  CC 0

A seamless pattern with a heart theme.

Source Firkin

Black And White Floral Pattern Background Inverse #197
 Dark  CC 0

Black And White Floral Pattern Background from PDP.

Source GDJ

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

Floral design 91 #1814
 Dark  CC 0

From a drawing in 'Hubert Montreuil, or the Huguenot and the Dragoon', Francisca Ouvry, 1873.

Source Firkin