One way to look wise is to sit on the corner of your desk, chew on the stem of your glasses, and gaze ruminatively into the middle distance. But this can grow tedious as you wait for people to notice you. This improvement, suggested in 1990 by Adam S. Halbridge, might help:

It is believed that many adult wearers of eyeglasses … would enjoy having a desirable flavor imparted to them when they chew or suck upon the ends of the temple arms. … [M]any younger children and teen-agers … would also enjoy having a desirable flavor imparted to them if they chew on the temple arms of their sunglasses.

He proposes adding a chewable cap to each arm — flavored like cinnamon, jalapeno, licorice, or taffy for grownups, fruit or candy for children.