A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
Prismatic 3D Isometric Tessellation Pattern 6
Source GDJ
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A dark metallic background with a pattern of stamped dots. Here's a dark "metallic" background pattern for you.
Source V. Hartikainen
A textured orange background pattern with vertical stripes.
Source V. Hartikainen
Prismatic Groovy Concentric Background 3
Source GDJ
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
The edges of all the red objects line up either vertically or horizontally, but it doesn't appear so. Made from a square tile that can be got by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
The classic notebook paper with horizontal stripes.
Source Are Sundnes
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
A free seamless background texture of "timber wall" (colored in dark brown).
Source V. Hartikainen
This texture looks like old leather. It should look great as a background on web pages.
Source V. Hartikainen
Used correctly, this could be nice. Used in a bad way, all hell will break loose.
Source Atle Mo
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
Background Wall, Art Abstract, white Well & CC0 texture.
Source Ractapopulous