A free web background image with a seamless concrete-like texture and an Indian-red color.
Source V. Hartikainen
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Might not be super subtle, but quite original in its form.
Source Alex Smith
The classic notebook paper with horizontal stripes.
Source Are Sundnes
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.
Source Sojan Janso