Pocket dimension (Jenny Everywhere and the Dark Bishop)
From Jenny Everywhere Wiki
One pocket dimension was used by the incarnation of Jenny Everywhere who was a Child of the Nexus for storage purposes.
It was so large as to contain a variety of “sections”, but the entry-point into it was an unremarkable satchel Jenny could carry on missions; if she needed something, she would send her small robot assistant Click to retrieve it. However, it was very cluttered; for example, “Section B” contained both Jenny's cell phone, a stuffed dinosaur, and the Electro-Neutralizer. (COMIC: Jenny Everywhere and the Dark Bishop)