Fish Pattern Background #233
 Noise  CC 0

From PDP.

Source GDJ

 More Textures
P5 #1113
 Light  CC BY-SA 3.0

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

Source Dima Shiper

Winding Stripes Background Pattern #1164
 Fabric  CC BY-SA 3.0

A dark brown fabric-like background texture with seamless pattern of winding stripes.

Source V. Hartikainen

Stone Wall & Green #1534
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

[email protected] #658
 Paper  CC BY-SA 3.0

Nicely crafted paper pattern, although a bit on the large side (500x593px).

Source Blaq Annabiosis

Wall #1362
 Wall  CC 0

Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!

Source Linolafett

Prismatic Geometric Pattern Background No [email protected] #786
 Noise  CC 0

Prismatic Geometric Pattern Background No Black

Source GDJ

Cross pattern (negative) #2332
 Dark  CC 0

A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.

Source Firkin

Little Pluses #73
 Light  CC BY-SA 3.0

Subtle grunge and many little pluses on top.

Source Atle Mo

Grunge For Surfaces 6 #1403
 Dark  CC 0

Gamedev - Metal Textures. CC0 License.

Source Davit Masia

[email protected] #112
 Dark  CC BY-SA 3.0

Dark pattern with some nice diagonal stitched lines crossing over.

Source Ashton

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

Abstract Stars Geometric Pattern Prismatic No Background

Source GDJ

Wallpaper Tile 13 #240
 Light  CC 0

An abstract Background pattern of purple twisty patterns.

Source TikiGiki

Floral pattern 17 #1723
 Dark  CC 0

Derived from an image that was uploaded to Pixabay by mdmelo.

Source Firkin

Flying swan pattern #1978
 Blue  CC 0

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

Source Firkin

Background pattern yellow #1999
 Yellow  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

Wood 8b #1453
 Wood  CC 0

Gamedev - Wood Textures. CC0 License.

Source Davit Masia

Background pattern 15 #201
 Dark  CC 0

A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.

Source Firkin

Prismatic Groovy Concentric Background 2 No Black #455
 Noise  CC 0

Prismatic Groovy Concentric Background 2 No Black

Source GDJ

Green & Grass #1368
 Green  CC 0

Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!

Source Linolafett

Triangles pattern #2408
 Brown  CC 0

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

Source Firkin

Stone Wall & Yellow #1574
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Prismatic Polka Dots Mark II 3 No [email protected] #535
 Noise  CC 0

Prismatic Polka Dots Mark II 3 No Background

Source GDJ

Txture #757
 Dark  CC BY-SA 3.0

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

Source Anatoli Nicolae

Pattern generator #161
 Noise  CC 0

A simple example on using clones. You can generate a nice base for a pattern fill quickly with it.

Source Lazur URH

Ground Cracked 2 #1280
 Wall  CC 0

Zero CC tileable ground (#2) cracked, crackled texture, made by me. CC0

Source Sojan Janso

Leafy pattern 8 (colour) #1805
 Green  CC 0

Colour version

Source Firkin

Leaded glass background (colour 2) #2053
 Pink  CC 0

Seamless pattern the tile.

Source Firkin

Pale Olive Green Background, Seamless Texture #902
 Stripes  CC BY-SA 3.0

A pale olive green background with a seamless texture.

Source V. Hartikainen

Plain & Wood #1356
 Wood  CC 0

CC0 for Free, hope you like it.

Source Yethiel