Here are what I have tried

EYOYO 8”

Bought this from eBay. At first glance, you’d think it’d be perfect fit N64 with it’s 4:3 aspect ratio, size and shape, right?

It’s alright. It’s hard to see details, it’s kind of blurry. This thing works in a pinch but it’s not pretty.

9.7in Wstirhi monitor on amazon

Reading some Amazon reviews, some people say this monitor is a good fit for retro games. I haven’t tested this.

https://www.amazon.com/dp/B0DL57P252