Time Sphere

Time Spheres are transportable containment spheres used in time travel, in order to make the process easier.

History
Cisco Ramon created a Time Sphere for Eobard Thawne, who was to travel through a wormhole back to his own time. However, Barry Allen torpedoed back through, smashing the sphere and disabling Thawne from traveling through time.

Future
Rip Hunter was said to have made the first one, though due to time travel this was not the first.