A criss-cross pattern similar to one I saw mown into a sports field.
Source Firkin
This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
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
A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Black brick wall pattern. Brick your site up!
Source Alex Parker
This beige background pattern resembles a concrete wall with engravings or something similar to it.
Source V. Hartikainen
A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
Background formed from the original with an emboss effect
Source GDJ
A colourful background drawn originally in paint.net and vectorised in Vector Magic.
Source Firkin
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
Medium gray pattern with small strokes to give a weave effect.
Source Catherine
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
This seamless web background texture looks like gray stone. It's great for using as a background image on web pages, or on some of their elements. Anyway, I hope you will find use for it.
Source V. Hartikainen
Remixed from a drawing that was uploaded to Pixabay by DavidZydd
Source Firkin
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Prismatic Abstract Geometric Background 5
Source GDJ