WeakAuras, just an icon with the timer on it, and when it isn't on (in combat only) it keep's jumping and bouncing in it's place to remind me even more, find it really useful when u're under pressure or in pve situations where u just daze off ;p
I use Weak Auras for Inquisition, Sacred Shield, Weakened Blows with an aura defined for each. In the case of each one if there are less than 5 seconds left for the given buff (or debuff on my target) I have it put up the word for that buff. It's easier for me to read than to look at a picture and remember what that picture means. I use 5 seconds because it gives me at least two globals to find a good spot in my rotation to reapply the buff/debuff.
When Inquisition has 5 second left or is missing and I'm in combat the word "Inquisition" appears on my screen.
For Weakened Blows I do the same thing but I display the word "Weaken".
I display these words slightly below my character to keep my eyes at the center of the my screen for vital information.