If you’re looking for a handheld emulator, I recommend looking into the Miyoo Mini+ or Anbernic RG35XX. They’ll last you years longer than the cheapie ones that play NES games since they’re better built and have community-made custom firmware. Plus they play way more: NES, SNES, Gameboys, PS1, Genesis, etc.

MSRP on these are ~$50-60. However you can get them for as low as $25-30 if you’re willing to use Chinese sellers like TEMU. If you’re curious I can send you more info on how to get them.

Lemuroid and Libretube are good examples. I personally think they’re beautiful and match great with stock (Google) Android Material Design