Vilros NES Style Case for the Raspberry Pi 4
This is a nice looking Raspberry Pi 4 case. It was only $15 on Amazon... however, if you can afford it (or if it's in stock), I do recommend the Argon One case ($25).
Vilros Raspberry Pi 4 Compatiable NES Style Retro Gaming NES Style Case with Preinstalled Ready to Connect Fan
https://amzn.to/2SmnUXw
Argon ONE Raspberry Pi 4 Case with Cooling Fan
https://amzn.to/2GWRQEA