Background pattern 272 (colour 3) #2055
Red CC 0A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
More Textures
Dark Wall #817
Dark CC BY-SA 3.0Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Grunge Website Background #1122
Grunge CC BY-SA 3.0A seamlessly tile-able grunge background image.
Source V. Hartikainen
Silver Scales@2X #190
Light CC BY-SA 3.0Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Billie Holiday #1002
Light CC BY-SA 3.0No relation to the band, but damn it’s subtle!
Source Thomas Myrman
Diamond pattern 2 (colour 2) #2267
Colorful CC 0From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Leafy pattern 7 #1828
Dark CC 0Remixed from an image that was uploaded to Pixabay by CatherineClennan
Source Firkin
Background pattern 260 #2094
Orange CC 0Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
Decorative divider 230 #2150
Dark CC 0From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
Subtle Dark Vertical #607
Dark CC BY-SA 3.0Classic vertical lines, in all its subtlety.
Source Cody L
Fabric pattern (colour 3) #2400
Fabric CC 0Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Background pattern 306 #1882
Colorful CC 0Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
White Carbon Fiber #823
Light CC BY-SA 3.0More carbon fiber for your collections. This time in white or semi-dark gray.
Source Badhon Ebrahim
Tileable Wood #655
Wood CC BY-SA 3.0Not so subtle. These tileable wood patterns are very useful.
Source Elemis
Decorative divider 297 #1746
Pink CC 0From drawing in 'Musings in Maoriland', Thomas Bracken, 1890.
Source Firkin
Background pattern 21 #205
Light CC 0A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
Background pattern 19 (black) #203
Dark CC 0A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
Cover Pink #1284
Pink CC 0Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.
Source Sojan Janso
Absurdity #825
Light CC BY-SA 3.0Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
Diagonales Decalées #1018
Light CC BY-SA 3.0Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste