I found these two storage pouches being sold in the same Ebay auction. I got them for half the price of new.
These are made by Hopnel. They fit over the storage pocket doors.
I knew from reading reviews that the velcro mounting straps they came with were marginal, so I had already devised an alternate mounting method. I cut off the straps...
...and sandwiched them between aluminum plates. This is a firmer mounting system and makes them hard for someone to take.
The extra storage will be nice for log books, phones, glasses, etc.