NFL quarterbacks and Army Rangers wear "wrist coaches" to keep track of things like "Blue 42 Twist Right" and the full names of people you're supposed to shoot on sight. But what about us civilians? You could argue that we don't need such devices; since it's not 4th down in your office and no one's shooting at you, you can take the time to dig a smartphone out of your pocket and mash buttons until you get the information you're seeking.
Still, French designer Doriane Favre has come up with the Montre Post-It, a wristwatch-shaped sticky meant to give you a quick reminder:
Beats writing on the back of your hand, and if you want a little extra space on the subway, leave one on and write REMEMBER TO TAKE ANTI-PSYCHOTIC MEDS on it in red Sharpie.