Background pattern pink #1948
Pink CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
More Textures
Skewed Print #819
Dark CC BY-SA 3.0An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Textured Red Brown Plastic #878
Wood CC BY-SA 3.0Textured Red Brown Plastic, Free Background Pattern. Although there's already enough plastic in our lives, let's bring it to the web too.)
Source V. Hartikainen
Background pattern 308 #1872
Yellow CC 0Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Carbon Fiber@2X #4
Carbon CC BY-SA 3.0A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
Leafy pattern 11 #1765
Dark CC 0From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Decorative divider 226 #2178
Dark CC 0Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
Black Metal Pipes #1089
Metal CC BY-SA 3.0An abstract texture of black metal pipes (seamless).
Source V. Hartikainen
Background pattern 227 (colour 6) #2309
Red CC 0A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Background pattern 200 #2506
Pink CC 0Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
Embossed Paper #731
Paper CC BY-SA 3.0One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Seed #1289
Wall CC 0Zero CC tileable seed texture, edited by me to be seamless from a Pixabay image. CC0
Source Sojan Janso
White Wall 3 #1148
Wall CC BY-SA 3.0This one needs to be used in small areas; you can see it repeat.
Source Luca
Background pattern 306 (colour 6) #1878
Colorful CC 0Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Leafy pattern 12 (colour 2) #1761
Red CC 0From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Wavy background #2013
Pink CC 0A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Decorative divider 220 #2230
Dark CC 0Prepared mostly as a raster in Paint.net and vectorised.
Source Firkin
Prismatic Geometric Pattern Background 2 #409
Noise CC 0Prismatic Geometric Pattern Background 2
Source GDJ
Climpek #775
Grid CC BY-SA 3.0Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
Prismatic Geometric Pattern Variation 2 With Background@2X #472
Noise CC 0Prismatic Geometric Pattern Variation 2 With Background
Source GDJ