I know this has been touched upon before, but I saw it happen not once, not twice, but three times on my flight yesterday.
The commuting F/A who stands up, steps into the aisle, pulls her four carry-ons down from the overheads on both sides of the aisle near her seat, and then proceeds to take five minutes building her little caravan right there in the aisle, while holding up the dozens of revenue pax behind her waiting to deplane.