A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
A dark background pattern/texture of a dimpled metal plate.
Source V. Hartikainen
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
Prismatic 3D Isometric Tessellation Pattern 6
Source GDJ
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
More in the paper realm, this time with fibers.
Source Jorge Fuentes
A criss-cross pattern similar to one I saw mown into a sports field.
Source Firkin
A seamless textured paper for backgrounds. Colored in pale orange hues.
Source V. Hartikainen
ZeroCC tileable beechwood wood texture, generated in Neo Texture Edit by me. CC0
Source Sojan Janso
The image depicts a seamless pattern of Japanese Edo pattern called "kikkou-matsu" or "亀甲松" meaning " tortoiseshell-pinetree".The real pinetree is like this: https://jp.pinterest.com/pin/500744052301065077/
Source Yamachem
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Sort of reminds me of those old house wallpapers.
Source Tish
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
This texture looks like old leather. It should look great as a background on web pages.
Source V. Hartikainen
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Classic 45-degree pattern, light version.
Source Luke McDonald
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
Prismatic Abstract Geometric Background 2 No Black
Source GDJ