There is a note attached:
Happy birthday, Dorothy! Hope you like these gifts. If you don't...well, next time tell me what you want! I had to guess! I'm terrible at guessing!
When the box is opened, it plays a copy of Boy Least Likely To's "Glad I Hitched My Apple Wagon To Your Star". Why? Because that song is fantastic, obviously!
And a note:
Something shiny but practical. It's a Terrestria Compass, only it's set to the TARDIS as north. So a bit of a homing beacon, if you'd like! Did I mention shiny? I like the shiny.
No note needed. Why? Because these are awesome, that's why. And in Dorothy's size. Not because he measured her slippered feet or anything.