To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Abstract Background Design No Black
Source GDJ
Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
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
The following orange background pattern resembles a honeycomb.
Source V. Hartikainen
Prismatic Polka Dots Mark II No Background
Source GDJ
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
Subtle scratches on a light gray background.
Source Andrey Ovcharov
A seamless pattern formed from a modified version of rwwgub's tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel
This could be a hippy vintage wallpaper.
Source Tileable Patterns
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
From a drawing in 'Picturesque New Guinea', J Lindt, 1887.
Source Firkin
A seamless web background with texture of aged grid paper.
Source V. Hartikainen
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Prismatic Groovy Concentric Background No Black
Source GDJ
Fix side and a seamless pattern formed from circles.
Source SliverKnight
From a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin