Parket #1478
 Wood  CC 0

Parket & Wood CC0 texture.

Source Unknow

 More Textures
[email protected] #716
 Light  CC BY-SA 3.0

One more in the line of patterns inspired by Japanese/Asian styles. Smooth.

Source Kim Ruddock

Dark Circles #306
 Dark  CC BY-SA 3.0

People seem to enjoy dark patterns, so here is one with some circles.

Source Atle Mo

Diagonal [email protected] #1007
 Gray  CC BY-SA 3.0

It has waves, so make sure you don’t get sea sickness.

Source CoolPatterns

Pixel bird pattern #1846
 Red  CC 0

Remixed from an SVG by Devanath found on Pixabay

Source Firkin

Background pattern 223 (colour 4) #2350
 Pink  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

"Beige Stone", Seamless Web Texture #1031
 Stone  CC BY-SA 3.0

It looks like a polished stone surface to me. Download it for free, as always.

Source V. Hartikainen

Colorful Geometric Pattern Background #231
 Noise  CC 0

PDP

Source GDJ

Background pattern 336 (colour 2) #1720
 Green  CC 0

Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.

Source Firkin

Stressed [email protected] #987
 Dark  CC BY-SA 3.0

We have some linen patterns here, but none that are stressed. Until now.

Source Jordan Pittman