The Eggcorn Database is a collection of commonly misused phrases; like “beside manor” instead of “bedside manner” or “vintage point” when they really mean “vantage point.”
I remember several years ago on the gayindy mailing list one of the troublemakers on the list accused someone else of “acting in an unethical manor.” Which made me laugh, because I pictured a giant estate house where in every room someone was behaving badly.