Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Prismatic Hypnotic Pattern No Background
Source GDJ
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
CC0 remixed from a drawing. Walter Crane, 1914, Firkin.
Source SliverKnight
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
An abstract Background pattern of purple twisty patterns.
Source TikiGiki
There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
Zero CC tileable hard cover cells, skin like, book texture. 4K, Scanned and made by me CC0
Source Sojan Janso
Prismatic Abstract Background Design
Source GDJ
A version without colours blended together to give a different look.
Source Firkin
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
You were craving more leather, so I whipped this up by scanning a leather jacket.
Source Atle Mo