I couldnt find any vertical stands for the Playstation Slim so I borrowed markmrx vertical stand for the Playstation 4 and resized them.
Theese are great for better cooling and a more secure way to have the Ps4 in a standing position. And they look awesome.
Also check this nice controller mount for your PlayStation 4 slim in vertical position: https://www.thingiverse.com/thing:2351096
If you want to print the sand pieces for yourself, print them about 5% smaller.
Mine have a tiny gap and therefor doesnt grip properly.
Print them about 1% smaller. Mine have a tiny gap and therefor doesnt grip/stay on.