There are, in my experience, two ways to spice up a photo or screen grab.
The first is digitally.
There are, I daresay, other opportunities for Harry Potter / Doctor Who location mashups, but that’s all I can think of for the moment.
Sometimes, only the real thing will do. So when Thomas brought home the volcano he’d made at school at the end of last term, I thought it could do with some clarification on perspective.
And to be fair, this is the sort of prop the BBC were routinely having to build in the 1970s, before CG sucked out a lot of the soul.
(The Fourth and the Eleventh Doctors were there, of course. But they’ve gone to look at rocks.)