Floral design 87 #1886
 Dark  CC 0

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

Source Firkin

 More Textures
Mix Stone #1298
 Stone  CC 0

ZeroCC tileable stone texture, edited from pixabay, CC0

Source Sojan Janso

Background Patterns - Lava #251
 Fabric  CC 0

If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117

Source Viscious-Speed

Corrosive Dark #1660
 Metal  CC 0

Metal-Rusty. CC0 License.

Source Unknow

Spiral pattern 2 #2175
 Dark  CC 0

A seamless pattern drawn in Inkscape.

Source Firkin

Psychedelic Geometric Background No Black #382
 Noise  CC 0

Psychedelic Geometric Background No Black

Source GDJ

Bright [email protected] #88
 Light  CC BY-SA 3.0

It’s okay to be square! A nice light gray pattern with random squares.

Source Waseem Dahman

Background pattern 222 (colour 2) #2344
 Brown  CC 0

A seamless pattern formed from a tile made from page ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.

Source Firkin

Wood [email protected] #371
 Wood  CC BY-SA 3.0

One of the few full-color patterns here, but this one was just too good to pass up.

Source Alexey Usoltsev

paper filer pack 2 #140
 Noise  CC 0

A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.

Source Lazur URH

Tall plant #1818
 Dark  CC 0

From a drawing in 'The Christian Year', John Keble, 1880

Source Firkin

Leaves #1669
 Paper  CC 0

Paper-Wallpaper. CC0 License.

Source Unknow

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

Glass & Gray #1624
 Gray  CC 0

Glass. CC0 License.

Source Unknow

Prismatic Snowflakes Pattern 2 No Background #412
 Light  CC 0

Prismatic Snowflakes Pattern 2 No Background

Source GDJ

Sakura Blossoms Background #389
 Noise  CC 0

Sakura Blossoms Background

Source GDJ

Stone Wall & Purple #1540
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Green Fibers #91
 Dark  CC BY-SA 3.0

The green fibers pattern will work very well in grayscale as well.

Source Matteo Di Capua

Crackled Wall #1272
 Wall  CC 0

Zero CC tileable ground cracked, crackled, texture, made by me.

Source Sojan Janso

Food and drink design #1897
 Dark  CC 0

Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.

Source Firkin

Fabric pattern 3 (colour 3) #2385
 Fabric  CC 0

Alternative colour scheme. Not 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

Dark Wall #1253
 Wall  CC 0

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

Source Sojan Janso

Floral pattern 18 #1716
 Dark  CC 0

A pattern formed from repeated instances of corner decoration 8. To get the basic tile select the rectangle in Inkscape and use shift+alt+i

Source Firkin

Nasty [email protected] #1009
 Gray  CC BY-SA 3.0

Nasty or not, it’s a nice pattern that tiles. Like they all do.

Source Badhon Ebrahim

Background pattern 250 (colour) #2171
 Yellow  CC 0

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

Source Firkin

Sine wave background #1735
 Dark  CC 0

The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i

Source Firkin

Grass #1286
 Unknow  CC 0

Zero CC tileable dry grass texture, photographed and made by me. CC0

Source Sojan Janso

Decorative divider 240 #2086
 Dark  CC 0

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

Source Firkin

Lined Paper #1034
 Light  CC BY-SA 3.0

I know there is one here already, but this is sexy!

Source Gjermund Gustavsen