Prepared mostly as a raster in Paint.net and vectorised.
Source Firkin
Prismatic Groovy Concentric Background 3
Source GDJ
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
A seamless pattern formed from miutopia's cakes on a tablecloth.
Source Firkin
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
Prismatic Groovy Concentric Background No Black
Source GDJ
This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
A nice one indeed, but I have a feeling we have it already? If you spot a copy, let me know on Twitter.
Source Graphiste
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
Just a nice looking textured pattern with faded blue stripes. Well, that's it for today... one background a day, as usual.
Source V. Hartikainen
Prismatic Abstract Background Design
Source GDJ
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A seamless pattern with green and yellow diagonal lines on top of a white dotted background.
Source V. Hartikainen
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Prismatic Polka Dots Mark II 3 No Background
Source GDJ
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
Could be paper, could be a Polaroid frame – up to you!
Source Chaos