A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
More in the paper realm, this time with fibers.
Source Jorge Fuentes
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
This is the remix of "Strawberry Pattern Background" uploaded by "GDJ". Thanks. I realigned strawberries so as to get seamless and changed the BG color.
Source Yamachem
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
This background pattern contains worn out colorful stripes as a texture.
Source V. Hartikainen
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
Colorful Floral Background 3 No Black
Source GDJ
No, not the band but the pattern. Simple squares in gray tones, of course.
Source Atle Mo
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
Zero CC tileable Laminate wood texture, photographed and made by me. CC0
Source Sojan Janso