A seamless stone-like background for blogs or any other type of websites.
Source V. Hartikainen
A background pattern with blue on white vertical stripes.
Source V. Hartikainen
A seamless pattern with a unit cell drawn as a bitmap in Paint.net and vectorized in Vector Magic.
Source Firkin
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
Colourful background achieved with gradient fills.
Source Firkin
You know, tiny and sharp. I’m sure you’ll find a use for it.
Source Atle Mo
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
Kaleidoscope Prismatic Abstract No Background
Source GDJ
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
Plywood Web Background background image for use in web design.
Source V. Hartikainen
A floral background formed from numerous clones of flower 117.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
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 comeback for you: the popular Escheresque, now in black.
Source Patten
Fix and cc0 to get the tile this is based on.
Source SliverKnight
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
More in the paper realm, this time with fibers.
Source Jorge Fuentes
Not strictly seamless in that opposite edges are not identical. But they do marry up to make an interesting pattern
Source Firkin
An alternative colour scheme for the original background.
Source Firkin
It’s big, it’s gradient—and it’s square.
Source Brankic1979
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda