From a drawing in 'Artists and Arabs', Henry Blackburn, 1868.
Source Firkin
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
A free background pattern with abstract green tiles.
Source V. Hartikainen
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Remixed from a drawing in 'Some account of the Worshipful Company of Ironmongers', John Nicholl, 1866.
Source Firkin
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
Derived from an image that was uploaded to Pixabay by TheDigitalArtist
Source Firkin
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
Looks like an old wall. I guess that’s it then?
Source Viahorizon
Prismatic Polka Dots Mark II 3 No Background
Source GDJ
Prismatic Groovy Concentric Background 4
Source GDJ
One more sharp little tile for you. Subtle circles this time.
Source Blunia