From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
The following orange background pattern resembles a honeycomb.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
Seamless Olive Green Web Background Image
Source V. Hartikainen
Prismatic Groovy Concentric Background 5
Source GDJ
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
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
This is the remix of an Openclipart clipart called "Maze" uploaded by "any_ono_mous".Thanks.This is a seamless pattern of a maze.
Source Yamachem
Background Wall, Art Abstract, Watercolor Vintage style CC0 texture.
Source Ractapopulous
Zero CC tileable ground (#2) cracked, crackled texture, made by me. CC0
Source Sojan Janso
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
The image a seamless pattern of a wire-mesh fence.I want you to use this pattern as a lower layer.
Source Yamachem