I'm going to come out and say the one thing that really bugs me about Deathly Hallows

[XemaSab]

The beaded bag.

If you can have a magic bag that you can schlep VAST amounts of stuff in, why doesn't everybody have one?

Why did Hermione have to carry all her books in an overstuffed book bag in Prisoner of Azkaban? Why all the faffing around with trunks of stuff in almost every book? Why would anyone ever visit the library, when you can carry a library with you?

It was a great series, but this one plot point just seemed lame.

/rant over

[Orrex]

1. What if you turned the bag inside-out?

:shrug:

[Matilda]

2. Good question.

Obviously, Hermione didn't know the spell when she was younger or she
would have performed it.

But it seems nobody else knew it either, and it would be such a useful
spell for everyday use, it's a bit surprising. Molly could have used
it every time she took the children shopping at Diagon Alley for school
things - would have made the trip a breeze.