I recently dug up my vita and installed CFW out of boredom. With the built-in PSP and PSX emulation, decent retroarch support and a fair few source ports, it’s quite a respectable retro handheld these days. I wouldn’t necessarily recommend sourcing one over say, an anbernic unit, but if you already have it, it’s a fairly easy jailbreak and worth the effort IMO.

There’s a repo for it maintained by ghost, but you have to do the install and setup yourself. Can’t vouch for reliability, never used it.

Pretty sure if you self host your own ghost install it’s already available.