Turning smth upside-down

[missa-gorightry.livejournal.com]

Hello all,

How do I say, "you turn your handbag upside-down and shake it"? As in, what you do when you lose your keys or phone.

I'm finding lots of idioms, but I suspect they're a little too anthropomorphic in nature. Would it be 'перевернуть сумку вверх дном'? And which word for shake?

Заранее спасибо!