Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Sometimes you just need the simplest thing.
Source Fabricio
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
A pale olive green background with a seamless texture.
Source V. Hartikainen
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
Prismatic Curved Diamond Pattern No Background
Source GDJ
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Zero CC tileable cork floor, photographed and made by me. CC0
Source Sojan Janso
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
A floral background formed from numerous clones of flower 117.
Source Firkin
A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Number five from the same submitter, makes my job easy.
Source Dima Shiper
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A seamless texture of a rough concrete surface.
Source V. Hartikainen
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
The image depicts a seamless pattern of a tortoise in tortoiseshell (hexagon).
Source Yamachem
The image is a design of blue glass.How about using it as background image?
Source Yamachem