Light Wool #695
 Grid  CC BY-SA 3.0

Submitted as a black pattern, I made it light and a few steps more subtle.

Source Andy

 More Textures
Star pattern #2410
 Brown  CC 0

A seamless pattern formed from a rectangular tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.

Source Firkin

Cloth Alike #1093
 Light  CC BY-SA 3.0

You guessed it – looks a bit like cloth.

Source Peax Webdesign

Wood 11 #1456
 Wood  CC 0

Gamedev - Wood Textures. CC0 License.

Source Davit Masia

Seamless tile 4 #1812
 Red  CC 0

Not strictly seamless in that opposite edges are not identical. But they do marry up to make an interesting pattern

Source Firkin

Background pattern 215 #2371
 Brown  CC 0

A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.

Source Firkin

Cake pattern #2480
 Colorful  CC 0

A seamless pattern formed from miutopia's cakes on a tablecloth.

Source Firkin

Dark Embroidery #1340
 Dark  CC BY-SA 3.0

A classic dark tile for a bit of vintage darkness.

Source Listvetra

Background pattern 249 #2179
 Blue  CC 0

To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.

Source Firkin

Flourish decorative divider #1732
 Dark  CC 0

Remixed from an image that was uploaded to Pixabay by Pixeline

Source Firkin

Clean Textile #737
 Fabric  CC BY-SA 3.0

A nice light textile pattern for your kit.

Source N8rx

Rustymetal Glossy #1647
 Metal  CC 0

Metal-Rusty. CC0 License.

Source Unknow

Leaded glass background (colour 2) #2053
 Pink  CC 0

Seamless pattern the tile.

Source Firkin

Knitted Netting #603
 Grid  CC BY-SA 3.0

A bit like some carbon, or knitted netting if you will.

Source Anna Litvinuk

Floral pattern 13 #1756
 Green  CC 0

From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.

Source Firkin

Background pattern 310 (colour 2) #1861
 Yellow  CC 0

Based on an image that was uploaded to Pixabay by devanath

Source Firkin

Floral design 95 #1790
 Green  CC 0

From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.

Source Firkin

Stone Wall & Gray #1510
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Diamond pattern 2 #2268
 Red  CC 0

From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

Elegant [email protected] #317
 Wall  CC BY-SA 3.0

This is a hot one. Small, sharp and unique.

Source GraphicsWall

[email protected] #291
 Dark  CC BY-SA 3.0

Can’t believe we don’t have this in the collection already! Slick woven pattern with crisp details.

Source Max Rudberg

[email protected] #720
 Fabric  CC BY-SA 3.0

Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.

Source Janos Koos

Dark Metallic Background Pattern #1088
 Metal  CC BY-SA 3.0

A dark background pattern/texture of a dimpled metal plate.

Source V. Hartikainen

Subtle Striped Brown Background Pattern #940
 Stripes  CC BY-SA 3.0

Here's a brown background pattern with subtle stripes. I hope you'll like the color. If not, feel free to change it using an image editor, if you know how of course. Personally, I'm using GIMP to create these backgrounds.

Source V. Hartikainen

Seamless Core Pattern #165
 Dark  CC 0

Seamless Core Pattern

Source GDJ

Always Grey #53
 Dark  CC BY-SA 3.0

Crossing lines with a subtle emboss effect on a dark background.

Source Stefan Aleksić

Subtle White Feathers #1103
 Light  CC BY-SA 3.0

This one is amazing, truly original. Go use it!

Source Viahorizon

Seamless Marble Like Texture (Light Blue) #1033
 Stone  CC BY-SA 3.0

A seamless marble-like texture colored in light blue.

Source V. Hartikainen

Crackled Wall #1272
 Wall  CC 0

Zero CC tileable ground cracked, crackled, texture, made by me.

Source Sojan Janso

Concrete Wall #77
 Wall  CC BY-SA 3.0

Dark blue concrete wall with some small dust spots.

Source Atle Mo

Stacked Circles #673
 Light  CC BY-SA 3.0

A simple circle. That’s all it takes. This one is even transparent, for those who like that.

Source Saqib