Honey I’m Subtle #1038
 Gray  CC BY-SA 3.0

A mid-gray hexagon pattern.

Source Alex M. Balling

 More Textures
Twinkle [email protected] #1011
 Dark  CC BY-SA 3.0

A very dark spotted twinkle pattern for your twinkle needs.

Source Badhon Ebrahim

Honey I’m Subtle #1038
 Gray  CC BY-SA 3.0

A mid-gray hexagon pattern.

Source Alex M. Balling

Floral background 18 (negative) #1832
 Dark  CC 0

Negative version of the original

Source Firkin

Guitarpick #1682
 Paper  CC 0

Paper-Wallpaper. CC0 License.

Source Unknow

Prismatic Pointers [email protected] #806
 Noise  CC 0

Prismatic Pointers Background

Source GDJ

Prismatic Snowflakes Pattern 3 No [email protected] #781
 Light  CC 0

Prismatic Snowflakes Pattern 3 No Background

Source GDJ

Floral background 6 #2226
 Colorful  CC 0

A seamless floral pattern.

Source Firkin

Background pattern 221 (colour) #2346
 Yellow  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

Background pattern 222 #2345
 Green  CC 0

Seamless pattern inspired by a drawing on Pixabay. To get the tile this is formed from, select the rectangle in Inkscape and use shift-alt-i.

Source Firkin

[email protected] #126
 Dark  CC BY-SA 3.0

And some more testing, this time with Seamless Studio. It’s Robots FFS!

Source Seamless Studio

Tessellation 15 (colour 3) #2220
 Red  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

[email protected] #46
 Paper  CC BY-SA 3.0

Looks a bit like concrete with subtle specks spread around the pattern.

Source Mladjan Antic

Background pattern 234 #2259
 Brown  CC 0

Drawn in Paint.net and vectorised in Vector Magic.

Source Firkin

White Plaster #368
 Wall  CC BY-SA 3.0

Sweet and subtle white plaster with hints of noise and grunge.

Source Phil Maurer

Xv #314
 Paper  CC BY-SA 3.0

Floral patterns will never go out of style, so enjoy this one.

Source Lasma

Rough Diagonal #691
 Fabric  CC BY-SA 3.0

The classic 45-degree diagonal line pattern, done right.

Source Jorick van Hees

Prismatic Abstract Background Design No [email protected] #790
 Noise  CC 0

Prismatic Abstract Background Design No Black

Source GDJ

Leafy pattern 7 #1828
 Dark  CC 0

Remixed from an image that was uploaded to Pixabay by CatherineClennan

Source Firkin

Prismatic Geometric Tessellation Pattern 2 No Background #553
 Noise  CC 0

Prismatic Geometric Tessellation Pattern 2 No Background

Source GDJ

Wavy tile #2024
 Colorful  CC 0

Seamless tile drawn in Paint.net and vectorised in Vector Magic.

Source Firkin

Prismatic Dots Background 3 #505
 Noise  CC 0

Prismatic Dots Background 3

Source GDJ

Twinkle Twinkle #1010
 Dark  CC BY-SA 3.0

A very dark spotted twinkle pattern for your twinkle needs.

Source Badhon Ebrahim

Floors & Block #1600
 Wall  CC 0

Floors-Tiles. CC0 License.

Source Unknow

Escheresque #777
 Light  CC BY-SA 3.0

Cubes as far as your eyes can see. You know, because they tile.

Source Jan Meeus

Prismatic Groovy Concentric Background 2 #453
 Noise  CC 0

Prismatic Groovy Concentric Background 2

Source GDJ

Floral pattern 10 #1771
 Yellow  CC 0

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

Source Firkin

pattern cleanup filtered #151
 Noise  CC 0

With a fabric filter added.Tags

Source Lazur URH

Floral background 19 #1833
 Dark  CC 0

Remixed from a JPG that was uploaded to Pixabay by Osckar

Source Firkin

Prismatic Curved Diamond Pattern 6 No [email protected] #546
 Dark  CC 0

Prismatic Curved Diamond Pattern 6 No Background

Source GDJ

Spiral pattern 2 #2175
 Dark  CC 0

A seamless pattern drawn in Inkscape.

Source Firkin