This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
I scanned a paper coffee cup. You know, in case you need it.
Source Atle Mo
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
An abstract texture of water. It's not perfect, but will do. You may download if you like it.
Source V. Hartikainen
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
The image depicts a shell seamless pattern.I used an OCAL clipart called "Shell" uploaded by "jgm104".Thanks.
Source Yamachem
Prismatic Groovy Concentric Background 5
Source GDJ
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Based on several public domain drawings on Wikimedia Commons. This was formed from a rectangular tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
Prismatic Polka Dots 3 No Background
Source GDJ
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
A seamless pattern formed from a modified version of rwwgub's tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin