CHAPDISC: Harry Potter and the Deathly Hallows, Ch. 19: The Silver Doe

[Carol]

No: HPFGUIDX 182742

Zgirnius:
> <snip>
> I disagree the bag is cramped. It appears to contain a capacious 
storage area, from which assorted objects can fly to within arm's
reach of the bag's mouth. It might also be an interesting place to be,
since clearly Harry is the one doing things and going places on
Albus's orders. Finally, Hogwarts is probably a somewhat depressing
place to roam around compared ot previous years.
<snip>

Carol responds:

Just to expand on this idea a bit, I agree that the bag would not be
cramped. It has the same spell on it that's on the tent itself.
Outwardly, the tent appears to be an ordinary two-man tent that might
be used by Muggles, but inside, it contains what amounts to a small
apartment, with beds rather than sleeping bags, a bathroom, and a
kitchen. (Probably, the kids dress in the bathroom for privacy;
presumably, they also bathe there.) We see what is probably the same
spell when Slughorn has his Christmas party in HBP; Harry notes that
his office (or study?) is larger than the usual professor's office, at
least on this occasion. It certainly appears to be an ordinary office
when Harry takes Ron there later for an antidote to the love potion.
And the MoM cars are also magically expanded to be roomy inside yet
ordinary Muggle cars on the outside.

As for Phineas roaming around inside the beaded bag, however, wouldn't
he be blindfolded? And I'm not sure that there's much to see beyond
clothes, books, and a few other supplies.

Carol, who can't help thinking of Mary Poppins every time Hermione
opens her beaded bag