This beige background pattern resembles a concrete wall with engravings or something similar to it.
Source V. Hartikainen
This light background pattern has a texture of "frozen" surface with diagonal stripes. Here's an yet another addition to the collection of free website backgrounds.
Source V. Hartikainen
The name is totally random, but hey, it sounds good.
Source Atle Mo
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH
This light blue background pattern is quite pleasing to the eye, it consists of a tiny rough grid pattern, which is seamless by design. That's it, if you like the color, you can use this seamless pattern in a web design without making any further modifications to it.
Source V. Hartikainen
White handmade paper pattern with small bumps.
Source Marquis
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
CC0 remixed from a drawing. Walter Crane, 1914, Firkin.
Source SliverKnight
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
Here's a new paper-like background for free use on personal and commercial projects (this applies to all background patterns here).
Source V. Hartikainen
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Zero CC tileable hard cover red book, scanned and made by me. CC0
Source Sojan Janso
The image depicts a seamless pattern of a fishnet with a plenty of fish.It may be a lucky charm for fishermen.
Source Yamachem
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ