CC0 and seamless wellington boot pattern.
Source SliverKnight
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
A browner version of the original weathered fence texture.
Source Firkin
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
From an image on opengameart.org shared by rubberduck.
Source Firkin
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
White little knobs, coming in at 10x10px. Sweet!
Source Amos
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
The name is totally random, but hey, it sounds good.
Source Atle Mo
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Prismatic Snowflakes Pattern No Background
Source GDJ
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
Colorful Floral Background 3 No Black
Source GDJ