Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
One more sharp little tile for you. Subtle circles this time.
Source Blunia
Free tiled background with colorful stripes and white splatter.
Source V. Hartikainen
From a drawing of the coat of arms of the Ottoman Empire on Wikimedia.
Source Firkin
Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Remixed from a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Remixed from a drawing that was uploaded to Pixabay by DavidZydd
Source Firkin
Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev