This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Might not be super subtle, but quite original in its form.
Source Alex Smith
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
This is a remix of "flower seamless pattern".I rotated the original image by 90 degrees.This is a seamless pattern of flowers.These horizontal wavy lines are one of Edo patterns which is called "tatewaku or tachiwaku or 立湧" that represents uprising steam or vapor.
Source Yamachem
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
Clover with background for St. Patrick's Day. Add to a card with a doily, ribbon, a leprechaun or other embellishments.
Source BAJ
New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
Source Firkin
Basket Fibers, Basket Texture, Braid Background style CC0 texture.
Source 1A-Photoshop
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
The base gradient edited so now more details are rendered.
Source Lazur URH
The image depicts a seamless pattern which includes hexagonally-aligned gourds with BG in light-brown.
Source Yamachem
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A nice and simple white rotated tile pattern.
Source Another One
Seamless SVG vector and JPG backgrounds with faded diagonal stripes. The colors are editable.
Source V. Hartikainen
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
Prismatic Rounded Squares Grid 3 No Background
Source GDJ