purchase document carrier

Hi!

I'm looking to purchase document carrier (conference/meeting type) but with a wrap strap (vintage style). It should be able to fit in a notepad, a pen, and couple little other things such as business card, and if possible my phone.
It would come in very handy to carry everything in between meetings as I'm usually dropping my things on my way! :)

Have you ever spotted such kind of item in any good stationery shop?

Thank you