With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Prepared mostly as a raster in Paint.net and vectorised.
Source Firkin
Formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Triangular Background Design Mark II 5
Source GDJ
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
Coming in at 666x666px, this is an evil big pattern, but nice and soft at the same time.
Source Atle Mo
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
Sort of reminds me of those old house wallpapers.
Source Tish
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
A free seamless background pattern for use on websites.
Source V. Hartikainen
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
Prismatic Curved Diamond Pattern 6 No Background
Source GDJ