Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868.
Source Firkin
It looks very nice I think.
Source V. Hartikainen
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
More leather, and this time it’s bigger! You know, in case you need that.
Source Elemis
Prismatic Abstract Geometric Background derived from an image on Pixabay.
Source GDJ
The image depicts a Japanese Edo pattern called "kanoko or 鹿の子" meaning "fawn" which has a fur with small white spots.
Source Yamachem
Prismatic Abstract Background Design
Source GDJ
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
From a drawing in 'Less Black than we're painted', James Payn, 1884.
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
A seamless pattern formed from a tile made from page ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Black And White Floral Pattern Background Inverse
Source GDJ
I’m not going to lie – if you submit something with the words Norwegian and Rose in it, it’s likely I’ll publish it.
Source Fredrik Scheide