As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
Background formed from the original with an emboss effect
Source GDJ
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
Free tiled background with colorful stripes and white splatter.
Source V. Hartikainen
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Prismatic Triangular Background Design Mark II 5
Source GDJ
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Textured Red Brown Plastic, Free Background Pattern. Although there's already enough plastic in our lives, let's bring it to the web too.)
Source V. Hartikainen
No, not the band but the pattern. Simple squares in gray tones, of course.
Source Atle Mo
A free background tile with a pattern of pink bump dots. This background tile is sweet! Moreover, it's designed for use as website backgrounds.
Source V. Hartikainen
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
This one is quite simple in design, it consists of vertical stripes layered on top of a seamless texture.
Source V. Hartikainen
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
A classic dark tile for a bit of vintage darkness.
Source Listvetra
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus