So I wanted to have a good case for my Jackpot Controller, but was not in love with the options. This is my first time designing something and utilizing it. It was designed to use a 3mm acrylic sheet (~75mm x ~136mm) depending on your tolerances. 

I used tree supports and they seemed to work great. 

I am also uploading the .step file if anyone wanted to tinker with it, as I'm sure there are more talented people who can perfect this model. 

BOM:

• 3mm Heat-set inserts (for the cnc controller to mount to)
• 10 M3x6 screws (4 to mount the controller, 2 to secure the lid to the base, 4 to secure the fan)
• 3mm acrylic sheet (cut ~75mm x ~136mm) 
• 40mm fan (I made the standoffs so they insert into my fan mounts snugly and then secured with M3 screws)
• (optional) Whatever countersunk screws to use to secure the case to your machine

Again, this is my first attempt at doing something like this and I would probably change a couple of things, but this suits my needs as-is. Hopefully this helps someone else!