Concrete [email protected] #78
 Wall  CC BY-SA 3.0

Dark blue concrete wall with some small dust spots.

Source Atle Mo

 More Textures
Colorful Floral Pattern Background 3-remix #215
 Noise  CC 0

This is the remix of "Colorful Floral Pattern Background 3" uploaded by "GDJ". Thanks.

Source Yamachem

Gray [email protected] #914
 Light  CC BY-SA 3.0

Some more diagonal lines and noise, because you know you want it.

Source Atle Mo

Light [email protected] #1204
 Gray  CC BY-SA 3.0

Like the name says, light and gray, with some small dots and circles.

Source Brenda Lay

Background pattern 306 (colour 6) #1878
 Colorful  CC 0

Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.

Source Firkin

Green [email protected] #86
 Dark  CC BY-SA 3.0

Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.

Source Simon Meek

Stone Wall & Dark #1582
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

[email protected] #896
 Light  CC BY-SA 3.0

Could remind you a bit of those squares in Super Mario Bros, yeh?

Source Jeff Wall

Subtle White Mini Waves #1322
 Unknow  CC BY-SA 3.0

Tiny circle waves, almost like the ocean.

Source Sagive

Sports car pattern #2442
 Red  CC 0

A seamless pattern formed from a sports car on clker.com. To get the tile, select the rectangle in Inkscape and use shift+alt+i.

Source Firkin

Background pattern 242 (colour 3) #2201
 Blue  CC 0

Random colour tile.

Source Firkin

Page ornament 41 #2092
 Dark  CC 0

Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.

Source Firkin

Grilled Noise #581
 Fabric  CC BY-SA 3.0

You could get a bit dizzy from this one, but it might come in handy.

Source Dertig Media

Cover Green #1283
 Dark  CC 0

Zero CC tileable hard cover green book, scanned and made by me. CC0

Source Sojan Janso

Brushed Aluminum 4 #1392
 Metal  CC 0

Gamedev - Metal Textures. CC0 License.

Source Davit Masia

Prismatic Snowflakes Pattern No Background #411
 Light  CC 0

Prismatic Snowflakes Pattern No Background

Source GDJ

Wood 4 #1447
 Wood  CC 0

Gamedev - Wood Textures. CC0 License.

Source Davit Masia

Wet Paper Background (Pale Yellow) #1224
 Yellow  CC BY-SA 3.0

A seamless paper background colored in pale yellow.

Source V. Hartikainen

Diamond Metal Plate #1397
 Metal  CC 0

Gamedev - Metal Textures. CC0 License.

Source Davit Masia

Nice Snow #1199
 Light  CC BY-SA 3.0

Not the most subtle, but very useful.

Source Kerstkaarten

Large Leather #649
 Paper  CC BY-SA 3.0

More leather, and this time it’s bigger! You know, in case you need that.

Source Elemis

fawn spot pattern #2472
 Dark  CC 0

The image depicts a Japanese Edo pattern called "kanoko or 鹿の子" meaning "fawn" which has a fur with small white spots.

Source Yamachem

Background pattern black and white #2030
 Dark  CC 0

A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.

Source Firkin

Photography #1304
 Unknow  CC BY-SA 3.0

Neat little photography icon pattern.

Source Hossam Elbialy

Flowery pattern 3 (BW) #2331
 Dark  CC 0

Adapted from a jpg on Pixabay.

Source Firkin

More Rough Wood 5 #1431
 Wood  CC 0

Gamedev - Wood Textures. CC0 License.

Source Davit Masia

Patern dots #241
 Dark  CC 0

Pattern repeating background 48x48

Source Keistutis

Random Grey [email protected] #70
 Stripes  CC BY-SA 3.0

Stefan is hard at work, this time with a funky pattern of squares.

Source Stefan Aleksić

Dungeons & Flagons 8 #1424
 Diamond  CC 0

Gamedev - Floors Textures. CC0 License.

Source Davit Masia

Subtle Orange Emboss #97
 Light  CC BY-SA 3.0

A hint of orange color, and some crossed and embossed lines.

Source Adam Anlauf