Description: A large, spherical field generator.
How it works: It displaces anything within its field through time, though it can only send living tissue or objects encased in living tissue.

​Description: A British police box on the outside, the TARDIS (Time and Relative Dimension in Space) is a time machine and spacecraft that's much larger on the inside.
How it works: It travels through time and space using Time Lord technology, piloted by the Doctor.

​Description: A standard-looking phone booth modified for time travel.
How it works: Punching in the desired time and location on the phone's keypad allows the booth to travel to that time and place.

Description: A magical hourglass pendant worn around the neck.
How it works: Turning the hourglass allows the wearer to travel back in time by one hour for each turn of the glass.

Description: A seemingly ordinary hot tub at a ski resort.
How it works: After a night of heavy drinking and a spilled energy drink, the hot tub transports its occupants back to the 1980s.

Description: A Victorian-era machine with a saddle-like seat, control panel, and rotating disks.
How it works: The operator sets the desired time on the control panel and activates the machine to travel to that time.

Description: A spherical device located in the Grand Clock of Underland.
How it works: It allows Alice to travel back and forth through the timeline of Underland.