It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
Abstract Tiled Background Extended 12
Source GDJ
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
Prismatic Chevrons Pattern 5 With Background
Source GDJ
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
Remixed from a drawing in 'Очерки Русской Исторіи въ памятникахъ быта', Petr Polevoi, 1879.
Source Firkin
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
More leather, and this time it’s bigger! You know, in case you need that.
Source Elemis
From a drawing in 'Az Osztrák-Magyar Monarchia irásban és képben', 1885.
Source Firkin
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A dark background pattern/texture of a dimpled metal plate.
Source V. Hartikainen
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
A green background pattern with warped vertical stripes and a grunge look.
Source V. Hartikainen
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Seamless pattern formed from a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
From a drawing in 'Codogno e il suo territorio nella cronaca e nella storia'', Gio and Giarella Cairo, 1897.
Source Firkin