Geometric triangles seem to be quite hot these days.
Source Pixeden
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A lot of people like the icon patterns, so here’s one for your restaurant blog.
Source Andrijana Jarnjak
Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Prismatic Polka Dots Mark II No Background
Source GDJ
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
Prismatic Triangular Background Design Mark II 5
Source GDJ
Prismatic Curved Diamond Pattern 6 No Background
Source GDJ
From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.
Source Firkin
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A textured orange background pattern with vertical stripes.
Source V. Hartikainen
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
Inspired by a design found in 'Konstantinápolyi emlékeim', Miklos Chriszto, 1893.
Source Firkin
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
From a drawing in 'Az Osztrák-Magyar Monarchia irásban és képben', 1885.
Source Firkin