A free background image with a seamless texture of cardboard. This texture of cardboard looks quite realistic, especially when is actually tiled.
Source V. Hartikainen
From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.
Source Firkin
A seamless paper background colored in pale yellow.
Source V. Hartikainen
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
Prismatic Geometric Pattern Background No Black
Source GDJ
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This is a seamless pattern which is derived from a flower petal image.
Source Yamachem
The Grid. A digital frontier. I tried to picture clusters of information as they traveled through the computer.
Source Haris Šumić
Prismatic Groovy Concentric Background 3
Source GDJ
An abstract texture of water. It's not perfect, but will do. You may download if you like it.
Source V. Hartikainen
Neat little photography icon pattern.
Source Hossam Elbialy
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
A seamlessly tileable pink background texture.
Source V. Hartikainen
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen
It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
A bit of scratched up grayness. Always good.
Source Dmitry
A light gray background pattern with seamless fabric-like texture and almost unnoticeable stripes.
Source V. Hartikainen
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
White handmade paper pattern with small bumps.
Source Marquis