Prismatic Polka Dots Mark II No Background
Source GDJ
Number five from the same submitter, makes my job easy.
Source Dima Shiper
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Prismatic Groovy Concentric Background
Source GDJ
A comeback for you: the popular Escheresque, now in black.
Source Patten
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
This is a remix of "flower seamless pattern".I rotated the original image by 90 degrees.This is a seamless pattern of flowers.These horizontal wavy lines are one of Edo patterns which is called "tatewaku or tachiwaku or 立湧" that represents uprising steam or vapor.
Source Yamachem
Kaleidoscope Prismatic Abstract No Background
Source GDJ
This tiled background comes in red and consists of tiles that look like gemstones. It is more for blogs or social profiles, I think.
Source V. Hartikainen
A free light orange brown wallpaper with vertical stripes designed for use as a tiled background on websites. An yet another background pattern with vertical stripes.
Source V. Hartikainen
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
From a drawing in 'Bond Slaves. The story of a struggle.', Isabella Varley, 1893.
Source Firkin
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ