A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
Prismatic Curved Diamond Pattern 6 No Background
Source GDJ
Derived from an image that was uploaded to Pixabay by starchim01
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
8 by 8 pixels, and just what the title says.
Source pixilated
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
A light background pattern with diagonal stripes. Here's a simple light striped background for you.
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
A seamless pattern formed from a tile made from page ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Feel free to download this "Dark Wood" background texture for your web site. The background tiles seamlessly!
Source V. Hartikainen
This seamless background image should look nice on websites. It has a dark blue gray texture with vertical stripes, it tiles seamlessly and, like all of the background images here, it's free. So, if you like it, take it!
Source V. Hartikainen
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
Seamless Background For Websites. It has a texture similar to cork-board.
Source V. Hartikainen
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
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
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
A cute x, if you need that sort of thing.
Source Juan Scrocchi
Inspired by a drawing in 'Poems', James Smith, 1881.
Source Firkin
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
The following orange background pattern resembles a honeycomb.
Source V. Hartikainen