A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
Remixed from a drawing in 'Some account of the Worshipful Company of Ironmongers', John Nicholl, 1866.
Source Firkin
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
You know, tiny and sharp. I’m sure you’ll find a use for it.
Source Atle Mo
Square design drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
This one needs to be used in small areas; you can see it repeat.
Source Luca
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A new one called white wall, not by me this time.
Source Yuji Honzawa
Zero CC tileable Crackled Cement (streaks) texture, photographed and made by me. CC0
Source Sojan Janso
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
White circles connecting on a light gray background.
Source Mark Collins
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
A seamless pattern formed from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin