A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
The original enhanced with some gradients.
Source Firkin
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Actually remixed from a pattern on Pixabay. But then noticed a very similar one on Openclipart.org uploaded by btj51q2.
Source Firkin
Remixed from a PNG that was uploaded to Pixabay by gingertea
Source Firkin
Prismatic Snowflakes Pattern No Background
Source GDJ
I’m guessing this is related to the Sony Vaio? It’s a nice pattern no matter where it’s from.
Source Zigzain
Pattern formed from simple shapes. Black version.
Source Firkin
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Derived from an image that was uploaded to Pixabay by TheDigitalArtist
Source Firkin
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
Sharp but soft triangles in light shades of gray.
Source Pixeden
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock