A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
Old China with a modern twist, take two.
Source Adam Charlts
From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.
Source Firkin
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
This was formed by distorting an image of a background on Pixabay.
Source Firkin
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
This was formed by distorting an image of a background on Pixabay.
Source Firkin
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
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
A seamless light gray paper texture with horizontal double lines.
Source V. Hartikainen
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
From an image on opengameart.org shared by rubberduck.
Source Firkin