A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
A seamlessly tileable pink background texture.
Source V. Hartikainen
A version without colours blended together to give a different look.
Source Firkin
This seamless background image should look nice on websites. It has a dark blue gray texture with vertical stripes, it tiles seamlessly and, like all of the background images here, it's free. So, if you like it, take it!
Source V. Hartikainen
Colour version of the original pattern.
Source Firkin
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
The original enhanced with some gradients.
Source Firkin
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Here's a quite bright pink background pattern for use on websites. It doesn't look like a real fur, but it definitely resembles one.
Source V. Hartikainen
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
From an image on opengameart.org shared by rubberduck.
Source Firkin
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
Number five from the same submitter, makes my job easy.
Source Dima Shiper
This makes me wanna shoot some pool! Sweet green pool table pattern.
Source Caveman
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
Prismatic Curved Diamond Pattern 6 No Background
Source GDJ