Zero CC tileable hard cover red book, scanned and made by me. CC0
Source Sojan Janso
The image depicts a seamless pattern of a fishnet with a plenty of fish.It may be a lucky charm for fishermen.
Source Yamachem
Derived from a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Psychedelic Geometric Background No Black
Source GDJ
A free seamless background pattern for use on websites.
Source V. Hartikainen
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
This is the remix of an OCAL clipart called "Rain on Window" uploaded by "pagarmidna".Thanks.This is a seamless pattern of raindrops.
Source Yamachem
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
Same as gray sand but lighter. A sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
A heavy hitter at 400x400px, but lovely still.
Source Breezi
Prismatic Triangular Background Design Mark II 5
Source GDJ
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
Colourful background achieved with gradient fills.
Source Firkin
This pattern comes in orange, and it looks as if it is "made of glass".
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A new take on the black linen pattern. Softer this time.
Source Atle Mo
A pattern formed from a photograph of a 16th century ceramic tile.
Source Firkin
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
A seamless gray background texture suitable for use on websites. To me, it has the look of stone. Feel free to modify it to meet your needs (by making it a bit lighter or darker, for example).
Source V. Hartikainen
8 by 8 pixels, and just what the title says.
Source pixilated
A textured blue background pattern with vertical stripes.
Source V. Hartikainen
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A pale olive green background with a seamless texture.
Source V. Hartikainen
A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen