Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
From a drawing in 'Two Women in the Klondike', Mary Hitchcock, 1899.
Source Firkin
Prismatic Groovy Concentric Background 2
Source GDJ
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
A free seamless background texture that looks like a brown stone wall.
Source V. Hartikainen
Prismatic Abstract Line Art Pattern Background
Source GDJ
Background Wall, Art Abstract, Watercolor Vintage style CC0 texture.
Source Ractapopulous
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
From a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A frame using leaves from an image that was uploaded to Pixabay by mayapujiati
Source Firkin