From my old online guestbook (now that AQ has public comments, I don't need the guestbook anymore):

p schaap - 2007-03-24
Today my daughter and I went to sit at the bench and stumbled across your letterbox. She actually found it and was very excited to find a strange container with ’drawing things’ and wanted to keep it. As a former geocacher I recognized what it was and we placed it back in its place. May I just suggest that it may not be as well hidden as you think? And this on one of the very first days of melted snow! Just a word of caution! Anyways what our unintentional find did was inspire us to get back into geocaching! Going to look for a handheld GPS now. Thanx for the inspiration!