A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Prismatic Hexagonalist Pattern No Background
Source GDJ
Original minus the background
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
An abstract Background pattern of purple twisty patterns.
Source TikiGiki
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A green background pattern with warped vertical stripes and a grunge look.
Source V. Hartikainen
A seamless pattern formed from background pattern 102
Source Firkin
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A white version of the very popular linen pattern.
Source Ant Ekşiler
Prismatic Hypnotic Pattern No Background
Source GDJ
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
Element of beach pattern with background.
Source Rones