Embossed lines and squares with subtle highlights.
Source Alex Parker
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
Remixed from a drawing in 'An Index to Deering's Nottinghamia Vetus et Nova', Rupert Chicken, 1899. The unit tile can be had by selecting the rectangle in Inkscape and using shift-alt-i
Source Firkin
Here's a repeatable texture that resembles a light green concrete wall or something similar.
Source V. Hartikainen
Seamless Olive Green Web Background Image
Source V. Hartikainen
Element of beach pattern with background.
Source Rones
Black paper texture, based on two different images.
Source Atle Mo
Based from Design Kindle
I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
Prismatic Abstract Background Design
Source GDJ
Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
This makes me wanna shoot some pool! Sweet green pool table pattern.
Source Caveman
Sharp pixel pattern, just like the good old days.
Source Paridhi
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
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
From an image on opengameart.org shared by rubberduck.
Source Firkin
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
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
Heavily remixed from a drawing in 'Barbara Leybourne; a story of eighty years ago', Sarah Hamer, 1889.
Source Firkin
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo