This could be a hippy vintage wallpaper.
Source Tileable Patterns
Prismatic Abstract Background Design
Source GDJ
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
From a drawing in 'Bond Slaves. The story of a struggle.', Isabella Varley, 1893.
Source Firkin
A version without colours blended together to give a different look.
Source Firkin
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A seamless pattern formed from background pattern 102
Source Firkin
This pattern comes in orange, and it looks as if it is "made of glass".
Source V. Hartikainen
Have you wondered about how it feels to be buried alive? Here is the pattern for it.
Source Hendrik Lammers
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Greyscale version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis