Non-seamless pattern drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic
Source Firkin
A bit of scratched up grayness. Always good.
Source Dmitry
A seamless texture of an abstract wall colored in shades of light orange brown.
Source V. Hartikainen
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Kaleidoscope Prismatic Abstract No Background
Source GDJ
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
White little knobs, coming in at 10x10px. Sweet!
Source Amos
A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
Element of beach pattern with background.
Source Rones
Subtle scratches on a light gray background.
Source Andrey Ovcharov
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
This is the remix of an OCAL clipart called "Art Nouveau ornament" uploaded by "microcosme".Thanks.This is a seamless pattern of an Art Nouveau ornament.
Source Yamachem
I’m guessing this is related to the Sony Vaio? It’s a nice pattern no matter where it’s from.
Source Zigzain
Seamless Prismatic Geometric Pattern With Background
Source GDJ
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Black brick wall pattern. Brick your site up!
Source Alex Parker