She's a type 40 TARDIS, the last of her kind. She might not always take him where he wants to go, but she always takes him where he needs to go. She wanted to see the universe so she stole a timelord and ran away, and he was the only one mad enough.
Oh, that box. Big and little at the same time, brand new and ancient - and the bluest blue ever. A TARDIS-esque blue base, glowing with metallic golden light from the heart of the time vortex, and glittering gold sparkles.
Bigger On The Inside as listed is in a 5gr jar with sifter and screw-on lid.