I've created this horror for my Lan nights and used a few things to cobble this jank together. it works for me.. maybe it will work for you? probably not

"But.. why?"
Each winter I host Lan nights with friends, which I setup a few junk PC's for people to use (some people don't bring their own or don't have a PC). the games we play are low demand games so my scrap computers do just fine.
But setup is time consuming and i would very much like to make the process easier. So what better way then to strap PC's to the back of monitors for quick storage and deployment!

I wanted something like the Eblaztr case but nothing really existed for me to print, that I could find. And I'm not throwing 500$ a case for a preorder to something I'm not even sure is coming out. (hopefully it does because that case looks awesome)

"Whats with all the haphazard holes"
Those are Speed holes to unleash the max amount of Ghz in the PC! also i just wanted to try and get the amount of plastic used down, its currently 600g

"The star shape knobs hurt my hands"
wow, ya do they ever! I used only the best pre-rendered shapes available on Tinkercad. the star shape gives the best grip to make sure the connection is tight. downside is i didn't round it off so it also hurts a bit. but the pain is a reminder of how far we've come.

"I don't see a hard drive bay"
Boy, you sure are observant. I didn't know where I wanted my perfect 500gb hard disk that i grabbed from the e-waste to go so i decided the use Alien Tape to boot strap that sucker next to the power supply. maybe I'll make an edit to this stl and add something proper. but lets be honest, I probably won't.

"Is that handle really strong enough to carry that monster"
¯_(ツ)_/¯

"where did you learn to 3d model!"
Yes!

"For the love of god can I fix this mess!"
I would love you to fix this Frankenstein vomit of an STL. or even try to slice it up to fit standard printer bed.

EDIT: I've made the handle version more robust. the photo shows my first attempt at a handle and not the new handle

STL's I modified to bring this Cronenberg to life.

CariBeige - the Carriable ATX PC Case - By: NotQuiteApex - https://www.printables.com/model/499425-caribeige-the-carriable-atx-pc-case
this was the closest design to what a wanted, a carriable case! i started out remixing this to just strap a monitor to it but as you can see I've completely reworked it that the only thing left from this is the back panel and half the power supply mount. also added more screw mounts for M-ATX

Articulating, Wall-Mounted, Magnetic Phone Mount - By: doctriam - https://www.thingiverse.com/thing:2448971/files
used this to get the knobs and screws for the legs

Vesa Mount Adapter - By: KitReplicados - https://www.printables.com/model/870704-vesa-mount-adapter
Used this as the vesa mount since it had each size in one print