… This is your sonic screwdriver, isn't it.
"Wait! Is that a sonic screwdriver?" asks Amie, her fear, guilt, annoyance, and exasperation momentarily overwhelmed by a lifetime of geekdom.
Regular old time travel.
"Uhh… no, it's just a time machine," says Bina. "I guess it kinda looks like one, a screwdriver I mean, but it has this flywheel thing attached to it."
"More time travel?" asks Emmie. "I thought we were going ot try to cut back on that."
"Yeah, I'm not super happy about it either," says Kendra. "But we do need the equations from the book if we're going to jump between timelines aaaand I suppose it saves us several hours of Moment integrity."