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
Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
An attempt for cleaning up the original image in a few steps.
Source Lazur URH
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
Remixed from a drawing that was uploaded to Pixabay by DavidZydd
Source Firkin
Prismatic Geometric Pattern Background 2
Source GDJ
A seamless pattern formed from a tile made from page ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Textured Red Brown Plastic, Free Background Pattern. Although there's already enough plastic in our lives, let's bring it to the web too.)
Source V. Hartikainen