The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
A bit simplified version. Although it could be edited out to be simpler. Anyway, this time the tiling is converted to a pattern fill -which is using clipping for the tile's edges.
Source Lazur URH
Everyone needs some stardust. Sprinkle it on your next project.
Source Atle Mo
This was formed by distorting an image of a background on Pixabay.
Source Firkin
A seamless pattern formed from a tile made from ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Abstract Line Art Pattern Background
Source GDJ
Prismatic Curved Diamond Pattern 5 No Background
Source GDJ
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Geometric triangles seem to be quite hot these days.
Source Pixeden
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
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
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
A seamless paper background texture colored in pale yellow. This seamless texture is ideal for those who need a yellow background image for their website. The texture resembles paper.
Source V. Hartikainen
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857
Source Firkin