People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
A brown metallic grid pattern layered on top of a dark fabric texture. It should look great when using as a tiled background on web pages, especially blogs.
Source V. Hartikainen
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
A pattern formed from repeated instances of corner decoration 8. To get the basic tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Sort of reminds me of those old house wallpapers.
Source Tish
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
An abstract texture of water. It's not perfect, but will do. You may download if you like it.
Source V. Hartikainen
From a drawing in 'Hubert Montreuil, or the Huguenot and the Dragoon', Francisca Ouvry, 1873.
Source Firkin
A browner version of the original weathered fence texture.
Source Firkin
No, not the band but the pattern. Simple squares in gray tones, of course.
Source Atle Mo
From drawing in 'Musings in Maoriland', Thomas Bracken, 1890.
Source Firkin
ZeroCC tileable mossy (lichen) stone texture, edited from pixabay. CC0
Source Sojan Janso
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin
This is sort of fresh, but still feels a bit old school.
Source Martuchox
Seamless Dark Grunge Texture. Here's a new grunge texture for use as a background.
Source V. Hartikainen
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
You guessed it – looks a bit like cloth.
Source Peax Webdesign
Zero CC tileable pine bark texture, photographed and made by me. CC0
Source Sojan Janso