Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
A heavy hitter at 400x400px, but lovely still.
Source Breezi
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
This background pattern contains worn out colorful stripes as a texture.
Source V. Hartikainen
Used a cherry by doctormo to make this seamless pattern
Source Firkin
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
A seamless pattern drawn originally in Paint.net by distorting a slice of background pattern 116 and copying the resulting triangle numerous times.
Source Firkin
I’m guessing this is related to the Sony Vaio? It’s a nice pattern no matter where it’s from.
Source Zigzain
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH
From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.
Source Firkin
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
The image depicts a shell seamless pattern.I used an OCAL clipart called "Shell" uploaded by "jgm104".Thanks.
Source Yamachem
A nice looking light gray background pattern with diagonal stripes.
Source V. Hartikainen
This light yellow background pattern consists of an irregular pattern of spots. Here's a light background pattern with yellowish tint.
Source V. Hartikainen
Prismatic Hexagonalist Pattern No Background
Source GDJ
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Looks like an old rug or a computer chip.
Source Patutin Sergey
This is the remix of "blue wave-seigaiha".The image depicts a seamless pattern of the front upper part of Japanese five yen coin which is used currently.This design represents a rice with ripe golden ears.
Source Yamachem
This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective