From an image on opengameart.org shared by rubberduck.
Source Firkin
The edges of all the red objects line up either vertically or horizontally, but it doesn't appear so. Made from a square tile that can be got by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Remixed from an image that was uploaded to Pixabay by CatherineClennan
Source Firkin
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
"Beige Stone", Tileable Texture.
Source V. Hartikainen
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Prismatic Abstract Background Design No Black
Source GDJ
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
The image is a remix of "edo pattern-samekomon".I changed the color of dots from black to white and added BG in light-brown.
Source Yamachem
A repeating background of thick textured paper. Actually, it turned out to look like something between a paper and fabric.
Source V. Hartikainen
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
From a drawing in 'Kingsdene', Maria Fetherstonehaugh, 1878.
Source Firkin
So tiny, just 7 by 7 pixels – but still so sexy. Ah yes.
Source Dmitriy Prodchenko
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
The image is a seamless pattern of a fishnet.
Source Yamachem
Remixed from a drawing in 'Some account of the Worshipful Company of Ironmongers', John Nicholl, 1866.
Source Firkin