To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
Submitted by DomainsInfo – wtf, right? But hey, a free pattern.
Source DomainsInfo
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Colour version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Zero CC tileable seed texture, edited by me to be seamless from a Pixabay image. CC0
Source Sojan Janso
Here's a seamless brown cork board background texture. Feel free to download or reshare if you like.
Source V. Hartikainen
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Prismatic Abstract Geometric Background 4
Source GDJ
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
A free light orange brown wallpaper with vertical stripes designed for use as a tiled background on websites. An yet another background pattern with vertical stripes.
Source V. Hartikainen