CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A seamless light gray paper texture with horizontal double lines.
Source V. Hartikainen
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
From a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin
Medium gray pattern with small strokes to give a weave effect.
Source Catherine
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
Black And White Floral Pattern Background from PDP.
Source GDJ
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
Just a nice looking textured pattern with faded blue stripes. Well, that's it for today... one background a day, as usual.
Source V. Hartikainen
From an image on opengameart.org shared by rubberduck.
Source Firkin
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
Used a cherry by doctormo to make this seamless pattern
Source Firkin
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
The image a seamless pattern of a wire-mesh fence.I want you to use this pattern as a lower layer.
Source Yamachem
Nicely executed tiling for an interesting pattern.
Source Ignasi Àvila Padró
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ