Prismatic Groovy Concentric Background 5 No Black
Source GDJ
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Colour version of the original pattern.
Source Firkin
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
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
A free background pattern with abstract green tiles.
Source V. Hartikainen
This could be a hippy vintage wallpaper.
Source Tileable Patterns
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Looks like an old rug or a computer chip.
Source Patutin Sergey
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
Prepared mostly as a raster in Paint.net and vectorised.
Source Firkin
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
More in the paper realm, this time with fibers.
Source Jorge Fuentes
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
A background pattern with wavy green vertical stripes. This one has green stripes on a white background. Download if you like it.
Source V. Hartikainen