After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
This tiled background comes in red and consists of tiles that look like gemstones. It is more for blogs or social profiles, I think.
Source V. Hartikainen
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Medium gray pattern with small strokes to give a weave effect.
Source Catherine
A version without colours blended together to give a different look.
Source Firkin
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Nicely executed tiling for an interesting pattern.
Source Ignasi Àvila Padró
This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
A gray background pattern with a texture of textile. Suits perfectly for web design.
Source V. Hartikainen
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
Alternative colour scheme for the original floral pattern.
Source Firkin
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin