I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
A seamless paper background colored in pale yellow.
Source V. Hartikainen
This background pattern contains a seamless texture of bark. It's not very realistic, but I think it looks quite nice.
Source V. Hartikainen
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
Original minus the background
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Colour version of the original pattern.
Source Firkin
A seamless pale yellow paper background with a pattern of animal tracks.
Source V. Hartikainen
A new one called white wall, not by me this time.
Source Yuji Honzawa
Found on the ground in french cafe in kunming, Yunnan, china
Source Rejon
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
Colour version of the original pattern.
Source Firkin
A pattern derived from part of a fractal rendering in Paint.net.
Source Firkin
The base gradient edited so now more details are rendered.
Source Lazur URH
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
Embossed lines and squares with subtle highlights.
Source Alex Parker