One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
Prismatic Geometric Pattern Background No Black
Source GDJ
Looks like an old rug or a computer chip.
Source Patutin Sergey
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Inspired by a design found in 'Konstantinápolyi emlékeim', Miklos Chriszto, 1893.
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
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
From a drawing in 'Jardyne's Wife', Charles Wills, 1891.
Source Firkin
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
ZeroCC tileable moss texture, photographed and made by me. CC0
Source Sojan Janso
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Fix and cc0 to get the tile this is based on.
Source SliverKnight
I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel
A free seamless background texture of "timber wall" (colored in dark brown).
Source V. Hartikainen
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
Here I have tried to create something that would look like maple wood. Not sure how well it's turned out, but at least it looks like wood.
Source V. Hartikainen