Q wearing a cowl
A cowl was a hooded robe worn by monks.
When appearing as a Franciscan monk on the bridge of the USS Enterprise-D in 2364, Q was wearing a cowl. (TNG: "Hide And Q")
While playing the role of Friar Tuck in Q's 2367 simulation of Sherwood Forest, Data wore a cowl. (TNG: "Qpid")