This seamless background image should look nice on websites. It has a dark blue gray texture with vertical stripes, it tiles seamlessly and, like all of the background images here, it's free. So, if you like it, take it!
Source V. Hartikainen
This ons is quite old school looking. Retro, even. I like it.
Source Arno Declercq
Zero CC tileable yellow craft paper; scanned and made by me. CC0
Source Sojan Janso
Just the symbols of the signs of the zodiac distributed in a chequer board-like pattern
Source Firkin
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
Zero CC tileable wood texture, made by me procedurally in Neo Texture Edit.
Source Sojan Janso
8 by 8 pixels, and just what the title says.
Source pixilated
As the original image 's page size is too large for its image size, I remixed it.
Source Yamachem
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
White circles connecting on a light gray background.
Source Mark Collins
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
The edges of all the red objects line up either vertically or horizontally, but it doesn't appear so. Made from a square tile that can be got by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This is sort of fresh, but still feels a bit old school.
Source Martuchox
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A pattern drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
A free seamless background texture of "timber wall" (colored in dark brown).
Source V. Hartikainen
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin