This is hilarious! The "toilet breathing tube" [1] actually had a prominent appearance in this year's movie "Kingsman - The Secret Service" (
http://www.imdb.com/title/tt2802144/), where a group of trainees used shower tubes to breathe through the toilets when their dorm was flooded with water. I guess they were lucky that the patent on this has already expired, otherwise they would have drowned for certain...