I am not sure if this is really legal, but Likea MPH is a replica pinhole camera of the Leica MP and sells online for $19.95:
“Everything you need is in the box bar film, a little glue or tape and the pinhole element. Honor tradition by cutting your own from a pop can. MPH components are scored and die cut from tough, coated 210 gsm card and can be reloaded and reused again and again. The MPH shoots on same 35mm film as your F5 or MP, so you can have anyone from Costco to your favorite lab handle processing and printing.”