Old Mathematics@2X #44
Stripes CC BY-SA 3.0This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
More Textures
Floral background #1980
Brown CC 0Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin
"Dirty Paper", Seamless Background #1059
Paper CC BY-SA 3.0A seamless background colored in pale orange. It has a paper like texture with diagonal grid pattern.
Source V. Hartikainen
Green Fibers #91
Dark CC BY-SA 3.0The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Sine wave background #1735
Dark CC 0The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
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
Decorative divider #1986
Dark CC 0Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Background pattern 226 (colour 3) #2318
Colorful CC 0A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Padded@2X #62
Dark CC BY-SA 3.0A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
Background pattern green #1947
Green CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
White Wall #1105
Wall CC BY-SA 3.0Looks like an old wall. I guess that’s it then?
Source Viahorizon
Background pattern 306 (colour 4) #1877
Colorful CC 0Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Through Pixel Dream #1228
Yellow CC BY-SA 3.0A yellow tiled background... Blurriness, bokeh effect and rectangles pattern in one mix.
Source V. Hartikainen
Project Papper #119
Paper CC BY-SA 3.0Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Escheresque #777
Light CC BY-SA 3.0Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
Floral background 2 #2471
Yellow CC 0Background formed from the original with an emboss effect.
Source Firkin
Background pattern 315 (colour 5) #1841
Yellow CC 0The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Floral background #1975
Colorful CC 0Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
Circles@2X #186
Light CC BY-SA 3.0One more sharp little tile for you. Subtle circles this time.
Source Blunia
Nami@2X #576
Dark CC BY-SA 3.0Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
WaveCut #75
Light CC BY-SA 3.0If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper