This light background pattern has a texture of "frozen" surface with diagonal stripes. Here's an yet another addition to the collection of free website backgrounds.
Source V. Hartikainen
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
You know you love wood patterns, so here’s one more.
Source Richard Tabor
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
It looks like a polished stone surface to me. Download it for free, as always.
Source V. Hartikainen
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
A bit of scratched up grayness. Always good.
Source Dmitry
A version without colours blended together to give a different look.
Source Firkin
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
By popular request, an outline version of the pentagon pattern.
Source Atle Mo
Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
Prismatic Hexagonalism Pattern No Background
Source GDJ
The tile for this is based on a repeating unit close to a design on Pixabay. It can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin