I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
Used in small doses, this could be a nice subtle pattern. Used on a large surface, it’s dirty!
Source Paul Reulat
Zero CC tileable brick texture, photographed and made by me. CC0
Source Sojan Janso
Element of beach pattern with background.
Source Rones
Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
Zero CC tileable cork floor, photographed and made by me. CC0
Source Sojan Janso
A white version of the very popular linen pattern.
Source Ant Ekşiler
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
You know, tiny and sharp. I’m sure you’ll find a use for it.
Source Atle Mo
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
Prismatic Curved Diamond Pattern No Background
Source GDJ
Just like your old suit, all striped and smooth.
Source Alex Berkowitz
Retro Circles Background 4 No Black
Source GDJ
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868.
Source Firkin
An abstract texture of black metal pipes (seamless).
Source V. Hartikainen
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
Prismatic Abstract Background Design
Source GDJ
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin