Minerva M McGonagall's via Her Walking Stick

: "Professor McGonagall had just stumped up the stone steps into the castle; she was carrying a tartan carpetbag in one hand and leaning heavily on a walking stick with her other, but otherwise looked quite well."
: — Description.[src]
Minerva McGonagall used a walking stick when she left St Mungo's Hospital for Magical Maladies and Injuries, after being hit with four Stunners. When Dolores Umbridge tried to sneak undetected from the Castle, Peeves ran after her whacking her alternatively with the walking stick and a sock full of chalk. McGonagall then expressed her regret that she could not run cheering after Umbridge herself, because Peeves had borrowed her walking stick.
== Appearances ==
* Pottermore