Jenny Everywhere's staff
From Jenny Everywhere Wiki
In the Collapsed Cosmos, when faced with the necessity of dueling Laura Drake, Jenny pulled a collapsible staff from her jacket pocket. Pressing a button on the side, she was able to expand it to its full size; vibrating in her hands, it began to glow “an eerie shade of blue”, and proved a match for Laura Drake's sword. (PROSE: The Hermetic Garbage of Jenny Everywhere)
Behind the scenes
The description of the “collapsible staff” is reminiscent of a lightsaber from the Star Wars series.