maple classic™ 
i turned a pocket chip, the portable pico 8 console, into an actual pico 8 console :p https://computerfairi.es/media/B4FPsj-P51zuBGzGQzo
sadly chip does not do 240p over composite, only 480i
to clarify: i just connected the pocket chip via composite output to the pvm and used a usb controller with pico8
you need to change some files around to make the pico8 load in desktop mode rather than pocketchip mode (which expects the 480x272 lcd)
@squirrel you are completely nailing the 80's vibe today
@troubleMoney how did you know