I liked this from Rob Breszny's book, PRONOIA Is the Antidote for Paranoia: How the Whole World Is Conspiring to Shower You with Blessings.
"In certain Native American traditions, the hole was a symbol for the female genitalia, through which souls enter this realm. In American scientific lore, a wormhole is a backdoor shortcut between two places in space separated by an astronomical distance. In my personal mythos, those are my two favorite nuances in the archetype of the hole.
When I was a kid I loved to fantasize that I'd obtained a magic hole like the one Bugs Bunny had in the comic books. It was a portable hole that Bugs could take with him everywhere and apply to any barrier he needed to slip through. Once he even managed to slap it up against the sky, giving him access to another dimension where the whole world was inside him, not outside. (Or was that a dream I had?)
What would you do with your portable magic hole?"
My thought: Have you read Philip Pullman's trilogy? Especially, the second book, The Subtle Knife?