I am thinking of offering brief seminars on principles of economics, economic policy and applied economic analysis to anyone who is interested. My intention is to offer these seminars in a "continuing education" type of format but without going through some school. However, I would like to be able to give my potential students some kind of certificate of attendance or something similar. Is there any academic agency, commission, private or public organization that I can affiliate myself with that would allow me to do so? The institution in question does not need to be reputable, U.S.-based or anything like that. My only requirement is that it is a legal one (the last thing I want is problems of legal nature). Could anyone recommend anything?