Dark blue concrete wall with some small dust spots.
Source Atle Mo
This is the remix of "Colorful Floral Pattern Background 3" uploaded by "GDJ". Thanks.
Source Yamachem
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
Tiny circle waves, almost like the ocean.
Source Sagive
A seamless pattern formed from a sports car on clker.com. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
Prismatic Snowflakes Pattern No Background
Source GDJ
A seamless paper background colored in pale yellow.
Source V. Hartikainen
More leather, and this time it’s bigger! You know, in case you need that.
Source Elemis
The image depicts a Japanese Edo pattern called "kanoko or 鹿の子" meaning "fawn" which has a fur with small white spots.
Source Yamachem
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf