Wavy background #2018
Colorful CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
More Textures
Prismatic Curved Diamond Pattern 8 No Background #549
Dark CC 0Prismatic Curved Diamond Pattern 8 No Background
Source GDJ
Cardboard #278
Paper CC BY-SA 3.0A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
Norwegian Rose #857
Light CC BY-SA 3.0I’m not going to lie – if you submit something with the words Norwegian and Rose in it, it’s likely I’ll publish it.
Source Fredrik Scheide
fawn spot pattern #2472
Dark CC 0The image depicts a Japanese Edo pattern called "kanoko or 鹿の子" meaning "fawn" which has a fur with small white spots.
Source Yamachem
Decorative divider 184 #2589
Dark CC 0From a drawing in 'Royal Ramsgate', James Simson, 1897.
Source Firkin
Seamless Prismatic Quadrilateral Line Art Pattern No Background #379
Diamond CC 0Seamless Prismatic Quadrilateral Line Art Pattern No Background
Source GDJ
Otis Redding@2X #1005
Dark CC BY-SA 3.0Otis Ray Redding was an American soul singer-songwriter, record producer, arranger, and talent scout. So you know.
Source Thomas Myrman
Corrugation #765
Light CC BY-SA 3.0The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Spirals pattern #1994
Colorful CC 0Uses spirals from Pixabay. To get the basic tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Fake Luxury #621
Diamond CC BY-SA 3.0Fake or not, it’s quite luxurious.
Source Factorio.us Collective
Stylized lion design #2089
Dark CC 0Derived from a drawing in 'Historiske Afhandlinger', Adolf Jorgensen, 1898.
Source Firkin
Dark #1258
Paper CC 0Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Prismatic Abstract Line Art Pattern Background 2 #567
Dark CC 0Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Aged Grid Paper Background #1072
Paper CC BY-SA 3.0A seamless web background with texture of aged grid paper.
Source V. Hartikainen
Floral tile 3 #1791
Yellow CC 0From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Background Patterns - Crimson #250
Fabric CC 0If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Prismatic Hypnotic Pattern 2 No Background #573
Noise CC 0Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Patterned Pale Orange Background #1314
Orange CC BY-SA 3.0You may use it as is, or modify it as you like.
Source V. Hartikainen
Grilled Noise #581
Fabric CC BY-SA 3.0You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
Background pattern 245 (colour 6) #2187
Colorful CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin
Textured Stripes@2X #868
Stripes CC BY-SA 3.0A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen