This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
A free background pattern with abstract green tiles.
Source V. Hartikainen
Remixed from a JPG that was uploaded to Pixabay by Osckar
Source Firkin
Background pattern made in "Grunge-Like" style. Available in both SVG and JPG formats. Edit to your needs then click the download button.
Source V. Hartikainen
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
A free green background pattern with a pattern of rhombuses on a seamless texture. Feel free to use it as a tiled background image on your web site.
Source V. Hartikainen
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
A slightly grainy paper pattern with small horizontal and vertical strokes.
Source Atle Mo
One more sharp little tile for you. Subtle circles this time.
Source Blunia
Seamless pattern made from a tile that can be obtained in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
This metal background pattern resembles a metal plate with rivets. Solid rivets on a metal plate.
Source V. Hartikainen
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
A seamless texture of worn out "cardboard".
Source V. Hartikainen
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
If you want png files of thisu can download them here :
Source Viscious-Speed
Background Wall, Art Abstract, Star Well & CC0 texture.
Source Ractapopulous
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin