Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
A repeating background for websites with a texture of black groove stripes.
Source V. Hartikainen
A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
Prismatic Geometric Pattern Background 2
Source GDJ
A pattern derived from part of a fractal rendering in Paint.net.
Source Firkin
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin