CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
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 seamless background of warped stripes on paper.
Source V. Hartikainen
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ
Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo
Original seamless pattern with an Inkscape filter.
Source Firkin
A free grid paper background pattern for using on web sites.
Source V. Hartikainen
The name is totally random, but hey, it sounds good.
Source Atle Mo
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
If you don’t like cream and pixels, you’re in the wrong place.
Source Mizanur Rahman
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I. A version of the original with random colors.
Source Firkin
New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
The original has been presented as black on transparent and stored in the pattern definitions. To retrieve the unit tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Just like the black maze, only in light gray. Duh.
Source Peax
It looks like a polished stone surface to me. Download it for free, as always.
Source V. Hartikainen
The name Paisley reminds me of an old British servant. That’s just me.
Source Swetha
This background pattern contains a texture of yellow wood planks. I think it looks quite original.
Source V. Hartikainen
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
One more sharp little tile for you. Subtle circles this time.
Source Blunia
A free seamless background with pink spots.
Source V. Hartikainen