There is an Avaaz signature campaign to “Establish National Licensing systems for AGI before it is fully achieved” (started by the director of the Millennium Project, Jerome Glenn) you may want to sign.
I’m not sure how fitting such a petition is for LW, that’s why I put it here. If somebody more involved (forum admins, maybe?) thinks it is worth for it to have a real post, please do it.
I think one of the main variables is the country where one is. You account for this more locally with “Be in a place where this sort of thing is reasonably common” but I don’t think anyone in most (some? at least spain and germany) European countries worries about the police when deciding if letting kids do stuff alone or not.