'That Donna Noble , is a star scope'
Donna picked up the small golden object off the cluttered table at the busy alien market they were attending. She held it up.
'Whats a star scope?' she asked with interest . The Doctor plucked it out of her hands.
'Oy!' she complained, as he held it to his eye.
'Oh brilliant, I haven't seen one of these for years! I may actually have one of my own in the attic..' he beamed, adjusting the eye piece.
'I said, what is it?' she repeated, the Doctor was just standing there grinning away.
'Oh look at that.. Chara is lit up, I haven't been to Chara since I was 100 years old..' talking to no one in particular.
'Oi Martian, I'm talking to you!' He looked up, and handed the object back to her.
'Hold it up to your eye' he explained, and as Donna watched blue stars swirling around in an inky sky appear in her view , enthralled , the Doctor explained she was actually holding an alien kaleidoscope.