Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Just like your old suit, all striped and smooth.
Source Alex Berkowitz
This is a seamless pattern which is derived from a flower petal image.
Source Yamachem
Pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
Plywood Web Background background image for use in web design.
Source V. Hartikainen
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
A seamless background tile of aged paper with shabby look.
Source V. Hartikainen
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
We have some linen patterns here, but none that are stressed. Until now.
Source Jordan Pittman
A seamless pattern formed from a sports car on clker.com. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Abstract Background Design No Black
Source GDJ
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
This is a remix of "blue wave-seigaiha".I hope this subtle color version of Seigaiha would be suitable for background .
Source Yamachem
A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Used in small doses, this could be a nice subtle pattern. Used on a large surface, it’s dirty!
Source Paul Reulat
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
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