A pattern drawn in Paint.net and vectorized in Inkscape.
Source Firkin
A seamless pattern recreated from an image on Pixabay. It is reminiscent of parquet flooring and is formed from a square tile, which can be recovered in Inkscape by selecting the ungrouped rectangle and using shift-alt-I together.
Source Firkin
This background pattern looks like bamboo to me. Feel free to download it for your website (for your blog perhaps?).
Source V. Hartikainen
This is a grid, only it’s noisy. You know. Reminds you of those printed grids you draw on.
Source Vectorpile
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
The image depicts a seamless pattern of a Japanese family crest called "chidori" in Japanese .A chidori in Japanese means a plover in English.
Source Yamachem
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Nicely executed tiling for an interesting pattern.
Source Ignasi Àvila Padró
Alternative colour scheme for the original floral pattern.
Source Firkin
Light and tiny, just the way you like it.
Source Rohit Arun Rao
Light and tiny, just the way you like it.
Source Rohit Arun Rao
To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
A gray background pattern with a texture of textile. Suits perfectly for web design.
Source V. Hartikainen
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
Background formed from the original with an emboss effect
Source GDJ
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel