A colourful background drawn originally in paint.net and vectorised in Vector Magic.
Source Firkin
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
Prismatic Basic Pattern 2 No Background
Source GDJ
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
A seamless background texture of old cardboard.
Source V. Hartikainen
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
Zero CC tileable seed texture, edited by me to be seamless from a Pixabay image. CC0
Source Sojan Janso
Derived from an image that was uploaded to Pixabay by pugmom40
Source Firkin
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
Adapted from an image that was uploaded to Pixabay by Anerma.
Source Firkin
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
The image depicts a seamless pattern of pine tree leaves.
Source Yamachem
New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
I scanned a paper coffee cup. You know, in case you need it.
Source Atle Mo