Battery life is probably the most dispensable factor as many monitors can both plug-in and function independently by battery.
That said, there are some technologies available today that make a notebook dispensable.
Pro-actively, the East Timorese have been an inconvenient and entirely dispensable commodity for the last twenty five years.
The English ladies were more easily dispensable Henry was a tyrant and a despot.
Strictly speaking the " religious congregations " should be distinguished from the orders of regular clerks, the difference being that in the former the vows, though taken for life, are only " simple vows " and more easily dispensable by authority; but the character and work of the two institutes is very similar.