Ok ok. If you say these items does pretty much nothing, then why even allow them at all? Tournaments are supposed to be based of nothing but skill, the only thing that can aid you in tournaments is your Character knowledge of Match ups, stage striking, and skill. Allowing any sort of item in will hinder the tournament environment (even if it's something as minor as food).
And do you even know the properties of the items you are allowing? Mr.Saturn breaks shields, Fan keeps you in a trap that is difficult to escape out of, and laser swords can aid a character and can be used for easy edgeguards.