Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
Zero CC tileable dry grass texture, photographed and made by me. CC0
Source Sojan Janso
Nice and gray, just the way I like it.
Source Dan Kruse
Same classic 45-degree pattern, dark version.
Source Luke McDonald
You know you love wood patterns, so here’s one more.
Source Richard Tabor
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
Crossing lines on a light background.
Source Daivid Serif
Prismatic Triangular Background Design Mark II 5
Source GDJ
ZeroCC tileable beechwood wood texture, generated in Neo Texture Edit by me. CC0
Source Sojan Janso
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Gold Triangular Seamless Pattern No Background
Source GDJ
First pattern tailor-made for Retina, with many more to come. All the old ones are upscaled, in case you want to re-download.
Source Atle Mo
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
From a drawing in 'Picturesque New Guinea', J Lindt, 1887.
Source Firkin
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
Prismatic Abstract Background Design
Source GDJ
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ