A free seamless background with pink spots.
Source V. Hartikainen
A seamless marble-like texture colored in light blue.
Source V. Hartikainen
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Prismatic Geometric Pattern Background
Source GDJ
A nice looking light gray background pattern with diagonal stripes.
Source V. Hartikainen
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
Medium gray pattern with small strokes to give a weave effect.
Source Catherine
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
Retro Circles Background 7 No Black
Source GDJ
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Prismatic Groovy Concentric Background 4
Source GDJ
Dark blue concrete wall with some small dust spots.
Source Atle Mo
Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
Dark wooden pattern, given the subtle treatment. based on texture from Cloaks. https://cloaks.deviantart.com
Source Atle Mo
Abstract Tiled Background Extended 12
Source GDJ
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua