Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
You may use it as is, or modify it as you like.
Source V. Hartikainen
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
From a drawing in 'A Guide to the Guildhall of the City of London', John Baddeley, 1898.
Source Firkin
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Prismatic Abstract Geometric Background 5 No Black
Source GDJ
A seamless pattern drawn originally in Paint.net by distorting a slice of background pattern 116 and copying the resulting triangle numerous times.
Source Firkin
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Prismatic Groovy Concentric Background
Source GDJ
Embossed lines and squares with subtle highlights.
Source Alex Parker
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts