There are a number of those that I already use.
The keys on imoprtant stuff, looking at bright light to sneeze, toilet paper in the toilet to prevent splashing, getting paid to poop, free air (most of the Chevron Gas Stations around me have free air normally and I have yet to find a station that won't turn the pump on for free if you ask), telling people about things I want to do (this also works with telling people about people I want to kill...if I tell others about it, I know I can't get away with doing it...this has saved more than one life), the tin foil tabs, I am always thinking of these kinds of things.