Prismatic Groovy Concentric Background 4 No Black
Source GDJ
Green Background Pattern
Source V. Hartikainen
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
Spice up your next school project with this icon background.
Source Swetha
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A cute x, if you need that sort of thing.
Source Juan Scrocchi
A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
A dark metallic background with a pattern of stamped dots. Here's a dark "metallic" background pattern for you.
Source V. Hartikainen
From a drawing in 'A Rolling Stone. A tale of wrongs and revenge', John Hartley, 1878.
Source Firkin
Remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
This background pattern has futuristic look. So, maybe it could be used on websites or blogs dedicated to video games?!
Source V. Hartikainen
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
This is the remix of "polka dot seamless pattern".The image depicts polka dot seamless pattern.
Source Yamachem
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
The name is totally random, but hey, it sounds good.
Source Atle Mo
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Zero CC tileable grass texture, photographed and made by me. CC0
Source Sojan Janso
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
From a drawing in 'Worsborough; its historical associations and rural attractions', Joseph Wilkinson, 1879.
Source Firkin