They are found in Disney Castle's Library in Kingdom Hearts II, and can only be seen in a cutscene in Kingdom Hearts. They also appear in Kingdom Hearts Birth by Sleep, but seem to act like security, shown when they capture Pete.
The brooms are besom brooms with brown handles and yellow bristles. They have been animated by magic, and have sprouted thin, brown arms and four-fingered hands as a result.
Their bristles are their "legs". The brooms are constantly seen carrying one brown bucket of water in each hand. Each bucket has a silver handle and two silver hoops around them.
Birth by Sleep
In Kingdom Hearts Birth by Sleep, the Brooms are present to capture Pete by the orders of Queen Minnie to banish him to another dimension.
In Kingdom Hearts, the Brooms appeared when Donald is walking down to the audience chamber.
Kingdom Hearts II
Dream Drop Distance
The brooms return in the world, Symphony of Sorcery. Mickey, in his attire from The Sorcerer's Apprentice, is shown working magic on the brooms.