For my phone, I use a cork pouch attached to a lanyard.
I have a really big smart phone and it fits, the pouch has been used for at least
3 different phones and looks like new (of course).
This way I can transfer my phone from my Cafe Bag to my Swift or just take it by itself.
I don't think the BB needs pockets, Kits, Pouches, Stuff Sacks and Snake Charmers can always be used on top of things.
I have the first three and they are great to put things you want quick access to.
If you are a light packer (unlike me), you can add a Convertible Packing Cube on top of the compartment when it is only half packed.
I agree that the Freudian Slip is the the best to avoid sloppiness in the paper area.

