I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
An attempt for cleaning up the original image in a few steps.
Source Lazur URH
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Nicely executed tiling for an interesting pattern.
Source Ignasi Àvila Padró
A seamless texture of an abstract wall colored in shades of light orange brown.
Source V. Hartikainen
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Prismatic Abstract Geometric Background 5 No Black
Source GDJ
Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
Sometimes you just need the simplest thing.
Source Fabricio
Prismatic Basic Pattern 2 No Background
Source GDJ
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin