Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
Remixed from a drawing in 'Some account of the Worshipful Company of Ironmongers', John Nicholl, 1866.
Source Firkin
The image depicts a seamless pattern of a snow crystal.I referred to a book called ”sekka-zusetsu” or "雪華図説" which means an illustrated explanation about snow crystals.This book was published in 1832 (天保3年) or Edo period.For more about "雪華図説",see here:dl.ndl.go.jp/info:ndljp/pid/2536975
Source Yamachem
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
The starting point for this was drawn on the web site steamcoded.org/PolyskelionMaker.svg
Source Firkin
A pattern derived from repeating unit cells each derived from part of a mosaic in paint.net. The starting point for the mosaic was a picture of some prawns!
Source Firkin
The classic notebook paper with horizontal stripes.
Source Are Sundnes
From a drawing in 'Picturesque New Guinea', J Lindt, 1887.
Source Firkin
This texture looks like old leather. It should look great as a background on web pages.
Source V. Hartikainen
f you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
The original enhanced with one of Inkscapes's filters.
Source Firkin
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
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
More in the paper realm, this time with fibers.
Source Jorge Fuentes
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
A slightly grainy paper pattern with small horizontal and vertical strokes.
Source Atle Mo
A tile-able background for websites with paper-like texture and a grid pattern layered on top of it.
Source V. Hartikainen
This is a seamless pattern which is derived from a flower petal image.
Source Yamachem
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
On a large canvas you can see it tiling, but used on smaller areas, it’s beautiful.
Source Paul Phönixweiß
A seamless pattern formed from background pattern 102
Source Firkin
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki