Dolores Umbridge's wand

The wand of Dolores Umbridge was "unusually short", according to Harry Potter. Its wood and core material are unknown.

Destruction
This wand was destroyed during the Skirmish in the Forbidden Forest, when it was snapped cleanly in half by a centaur's hoof in 1996, when Umbridge was carried off by a herd she offended.

Before its destruction, Umbridge used the wand to cast a Shield Charm against a centaur who fired an arrow at her, and an Incarcerous spell to strangle Magorian during the skirmish.

Harry tried to retrieve it right after she dropped it, but it was snapped before he could reach it.

New wand
Presumably, Umbridge acquired a new wand later, and it was with this wand that she conjured her cat Patronus to ward off the Dementors, as she prosecuted Muggle-borns, when she was the Head of the Muggle-Born Registration Commission.

However, this wand was no doubt taken away when she was sent to Azkaban.

Behind the scenes

 * In the film adaptation of Harry Potter and the Order of the Phoenix, Umbridge's wand is a crimson colour with a pink gem placed in the centre. It, too, is shorter than the other wands shown.
 * Due to the great possibility of the wand snapping around the pink gem, Imelda Staunton had to use precise flourishes to avoid breaking her prop.
 * This prop was used when the Hogwarts students and staff of whom raised their wands in mourning for Albus Dumbledore who had just died.
 * A new wand was made that connects the gem to the wand itself, so the wand would not break near the gem.
 * According to Pottermore, short wands tend to belong to people who are "lacking" in personality, as there are many short witches and wizards with average sized wands.

Appearances

 * Harry Potter and the Order of the Phoenix
 * Harry Potter and the Order of the Phoenix (film)
 * Harry Potter and the Order of the Phoenix (video game)
 * LEGO Harry Potter: Years 5-7