Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
A seamlessly tile-able grunge background image.
Source V. Hartikainen
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Dark, crisp and subtle. Tiny black lines on top of some noise.
Source Wilmotte Bastien
An alternative colour scheme to the original seamless pattern.
Source Firkin
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
Black And White Floral Pattern Background Inverse
Source GDJ
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
A seamless gray background texture suitable for use on websites. To me, it has the look of stone. Feel free to modify it to meet your needs (by making it a bit lighter or darker, for example).
Source V. Hartikainen
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
From a drawing in 'An Old Maid's Love. A Dutch tale told in English', Maarten Maartens, 1891.
Source Firkin