Spiral background 2 (colour 2) #2244
 Colorful  CC 0

Remixed from a raster on Pixabay, that was uploaded by ArtsyBee.

Source Firkin

 More Textures
Watercolor #1477
 Colorful  CC 0

Background Wall, Art Abstract, Watercolor Vintage style CC0 texture.

Source Ractapopulous

Prismatic Polka Dots 3 No [email protected] #529
 Noise  CC 0

Prismatic Polka Dots 3 No Background

Source GDJ

Prismatic Floral [email protected] #474
 Dark  CC 0

Prismatic Floral Background

Source GDJ

Robots #125
 Dark  CC BY-SA 3.0

And some more testing, this time with Seamless Studio. It’s Robots FFS!

Source Seamless Studio

Brushed Aluminum 1 #1389
 Metal  CC 0

Gamedev - Metal Textures. CC0 License.

Source Davit Masia

Banner 62 #2439
 Dark  CC 0

From a drawing in 'Lil', Evelyn Whittaker, 1893.

Source Firkin

Black Scales #191
 Dark  CC BY-SA 3.0

Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.

Source Alex Parker

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

Leafy pattern 12 (colour 2) #1761
 Red  CC 0

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

Source Firkin

Prismatic Curved Diamond Pattern 5 No Background #543
 Diamond  CC 0

Prismatic Curved Diamond Pattern 5 No Background

Source GDJ

Pattern & Mix #1620
 Wall  CC 0

Fence. CC0 License.

Source Unknow

Background pattern 269 #2062
 Dark  CC 0

A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i

Source Firkin

Light Toast #759
 Paper  CC BY-SA 3.0

Has nothing to do with toast, but it’s nice and subtle.

Source Pippin Lee

Stone Wall & Yellow #1490
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Decorative divider 225 #2155
 Dark  CC 0

From a drawing in 'Our own country', 1898.

Source Firkin

Vintage Speckles #653
 Wall  CC BY-SA 3.0

Lovely pattern with splattered vintage speckles.

Source David Pomfret

Gray Textile Background #1168
 Fabric  CC BY-SA 3.0

A gray background pattern with a texture of textile. Suits perfectly for web design.

Source V. Hartikainen

Fabric pattern (colour 4) #2399
 Fabric  CC 0

Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

Background pattern 195 #2587
 Grid  CC 0

Inspired by a pattern I saw in a 19th century book. This seamless pattern was created from a square tile. To get the tile, select the pattern in Inkscape and use shift+alt+i.

Source Firkin

Stone Wall & Dark #1542
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Old Husks #631
 Wall  CC BY-SA 3.0

A bit of scratched up grayness. Always good.

Source Josh Green

Dark [email protected] #648
 Carbon  CC BY-SA 3.0

That’s what it is, a dark dot. Or sort of carbon looking.

Source Tsvetelin Nikolov

Brushed Aluminum 4 #1392
 Metal  CC 0

Gamedev - Metal Textures. CC0 License.

Source Davit Masia

Background pattern 332 #1742
 Noise  CC 0

The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i

Source Firkin

Background pattern 201 (colour 4) #2494
 Grid  CC 0

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

Source Firkin

Glossy Groove Stripe Pattern (Pale Orange) #967
 Stripes  CC BY-SA 3.0

A pale orange background pattern with glossy groove stripes.

Source V. Hartikainen

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

Embossed Paper #731
 Paper  CC BY-SA 3.0

One more from Badhon, sharp horizontal lines making an embossed paper feeling.

Source Badhon Ebrahim

Gradient Squares #693
 Grid  CC BY-SA 3.0

It’s big, it’s gradient—and it’s square.

Source Brankic1979