Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
An abstract texture of black metal pipes (seamless).
Source V. Hartikainen
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
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 grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Have you wondered about how it feels to be buried alive? Here is the pattern for it.
Source Hendrik Lammers
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
From a drawing in 'Danmarks Riges Historie af J. Steenstrup, Kr. Erslev, A. Heise, V. Mollerup, J. A. Fridericia, E. Holm, A. D. Jørgensen', 1897.
Source Firkin
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
Prismatic Triangular Background Design Mark II 5
Source GDJ
Prismatic Polka Dots 3 No Background
Source GDJ
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
Mostly just mucked about with the colours and made one of the paths in the lead frame opaque. The glass remains transparent.
Source Firkin
This is the remix of "Colorful Floral Pattern Background 3" uploaded by "GDJ". Thanks.
Source Yamachem
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
The original enhanced with one of Inkscapes's filters.
Source Firkin