Artemis, the moon goddess in Greek mythology, personifies NASA's efforts to return astronauts to the lunar surface and beyond. The Space Launch System is the American super heavy-lift rocket that will be used to get us there. At launch, the SLS rocket with crew will weigh 5,750,000 pounds.
Building a Metal Earth Tardis is sort of like making it appear in the world, so its completion might warrant singing a certain tune, or making a certain noise...
Unfortunately, this model can't bend space like the original. It can, however, be moved around in the air and nothing on it stops you from going "Pew pew!", so it's still a pretty good deal, all in all.
You could probably collect enough Metal Earth spacecraft to make a timeline of our progress. It's pretty neat to see how far we've come, and imagine how much farther we have to go.