Pink Clouds Background #1230
 Pink  CC BY-SA 3.0

Actually, there's no clouds in it, but I think it looks quite nice.

Source V. Hartikainen

 More Textures
Pattern & Mix #1620
 Wall  CC 0

Fence. CC0 License.

Source Unknow

Background pattern 234 (colour 3) #2257
 Blue  CC 0

Drawn in Paint.net and vectorised in Vector Magic.

Source Firkin

Colorful Floral Background [email protected] #484
 Dark  CC 0

Colorful Floral Background 3

Source GDJ

Cork Panel Background Texture #869
 Wood  CC BY-SA 3.0

This one looks like a cork panel. Feel free to use it as a tiled background on your blog or website.

Source V. Hartikainen

Background pattern 257 (colour) #2136
 Green  CC 0

Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.

Source Firkin

Old Cardboard, Background Texture #1213
 Cardboard  CC BY-SA 3.0

A seamless background texture of old cardboard.

Source V. Hartikainen

Lined Paper #1034
 Light  CC BY-SA 3.0

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

Source Gjermund Gustavsen

samekomon-02 #2263
 Pink  CC 0

The image is a remix of "edo pattern-samekomon".I changed the color of dots from black to white and added BG in light-brown.

Source Yamachem

Gray Dots Background Pattern #1127
 Grid  CC BY-SA 3.0

A seamless background pattern with impressed gray dots.

Source V. Hartikainen

Prismatic Dots Background 6 #511
 Dark  CC 0

Prismatic Dots Background 6

Source GDJ

Atomicfrogs #1670
 Paper  CC 0

Paper-Wallpaper. CC0 License.

Source Unknow

Prismatic Groovy Concentric Background No Black #451
 Noise  CC 0

Prismatic Groovy Concentric Background No Black

Source GDJ

Reticular [email protected] #764
 Light  CC BY-SA 3.0

The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.

Source Anna Litvinuk

Abstract Ellipses Background Grayscale #378
 Dark  CC 0

Abstract Ellipses Background Grayscale

Source GDJ

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

Crisp Paper [email protected] #842
 Light  CC BY-SA 3.0

Sort of reminds me of those old house wallpapers.

Source Tish

Decorative divider 211 #2362
 Dark  CC 0

From a drawing in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.

Source Firkin

Faded Yellow Stripes, Background Pattern #933
 Stripes  CC BY-SA 3.0

A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.

Source V. Hartikainen

Skewed Print #819
 Dark  CC BY-SA 3.0

An interesting dark spotted pattern at an angle.

Source Hendrik Lammers

Stone Wall & Dark #1529
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Decorative divider 244 #2080
 Dark  CC 0

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

Source Firkin

Moss 1 #2104
 Unknow  CC 0

CC0 textures, backgrounds.

Source SliverKnight

Crossword #1301
 Light  CC BY-SA 3.0

Borderline too subtle. Yes, I said it.

Source Ideawebme

Abstract Ellipses Background #275
 Dark  CC 0

Abstract Ellipses Background

Source GDJ

Prismatic Groovy Concentric Background #449
 Noise  CC 0

Prismatic Groovy Concentric Background

Source GDJ

Background pattern 227 (colour 3) #2312
 Pink  CC 0

A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.

Source Firkin

Leaded glass background (colour 6) #2047
 Colorful  CC 0

Seamless pattern the tile.

Source Firkin

Brushed Alum #67
 Light  CC BY-SA 3.0

A light brushed aluminum pattern for your pleasure.

Source Tim Ward