Remixed from an image that was uploaded to Pixabay by CatherineClennan
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
This background pattern contains a texture of yellow wood planks. I think it looks quite original.
Source V. Hartikainen
Prismatic Abstract Geometric Background 4
Source GDJ
You guessed it – looks a bit like cloth.
Source Peax Webdesign
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A dark metal plate with an embossed grid pattern and a bit of rust. Here's a dark metal plate texture for use as a tiled background on web pages.
Source V. Hartikainen
This background pattern looks like bamboo to me. Feel free to download it for your website (for your blog perhaps?).
Source V. Hartikainen
Inspired by this, I came up with this pattern. Madness!
Source Atle Mo
A seamless background pattern of dark brown wood planks.
Source V. Hartikainen
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
The classic notebook paper with horizontal stripes.
Source Are Sundnes
Zero CC tileable cork floor, photographed and made by me. CC0
Source Sojan Janso
A simple example on using clones. You can generate a nice base for a pattern fill quickly with it.
Source Lazur URH
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba