Cardboard Flat #961
Gray CC BY-SA 3.0Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
More Textures
Prismatic Abstract Geometric Background 2 No Black@2X #446
Noise CC 0Prismatic Abstract Geometric Background 2 No Black
Source GDJ
Wavy background #2014
Blue CC 0A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
3D Wood #1475
Wood CC 0Basket Fibers, Basket Texture, Braid Background style CC0 texture.
Source 1A-Photoshop
Checkered Light Emboss #280
Grid CC BY-SA 3.0Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Soft Kill@2X #319
Dark CC BY-SA 3.0Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Cells #1285
Paper CC 0Zero CC tileable hard cover cells, skin like, book texture. 4K, Scanned and made by me CC0
Source Sojan Janso
Rough Cloth@2X #313
Fabric CC BY-SA 3.0More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
Xv #314
Paper CC BY-SA 3.0Floral patterns will never go out of style, so enjoy this one.
Source Lasma
Background pattern 323 (colour 4) #1809
Green CC 0Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Floral divider 6 #1748
Dark CC 0From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Background pattern 314 (colour 5) #1835
Pink CC 0The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Dark Brown Wood Background (Tile-able) #886
Wood CC BY-SA 3.0Tile-able Dark Brown Wood Background. Feel free to use it as a background image in your designs or somewhere on the web. By the way, the color seems to be close to Coffee Brown.
Source V. Hartikainen
Fruit on a branch #1967
Dark CC 0From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
shell pattern #2533
Brown CC 0The image depicts a shell seamless pattern.I used an OCAL clipart called "Shell" uploaded by "jgm104".Thanks.
Source Yamachem
pinetree leaves seamless pattern #2517
Colorful CC 0The image depicts a seamless pattern of pine tree leaves.
Source Yamachem
Background pattern 323 (colour 2) #1811
Blue CC 0Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Tex2res1@2X #722
Fabric CC BY-SA 3.0Number 3 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Background pattern 268 #2066
Dark CC 0Remixed from a drawing in 'Kulturgeschichte der Deutschen im Mittelalter' Franz von Loeher, 1891. The unit tile can be had by selecting the rectangle in Inkscape and using shift-alt-i
Source Firkin
Vintage pattern #1960
Grid CC 0Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
Background pattern 252 (colour) #2161
Colorful CC 0Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Metal Grid Pattern #1091
Metal CC BY-SA 3.0A repeatable image with dark background and metal grid pattern.
Source V. Hartikainen