Transparent containers with easily removable lids also work well.
Covered with separate removable lids, they were used for many things, from cooking to storage.
The Duo has a rectangular case profile with rounded corners and a removable lid to protect the keys and control surface.
The exception to this was a portable model, in which the keyboard formed a removable lid that could be snapped to the main unit for traveling.
The first animal depicted is apparent in the overall shape and design of the removable lid.
The back and animal head at the pouring end usually are a removable lid, lifted off for pouring.
The bottom closure and removable top lid are both slightly domed to prevent implosion should pressure reversals be encountered.
Although it has a removable lid, the jar could never be called functional.
The tricorn hat forms a pouring spout, often with a removable lid, and a handle is attached at the rear.
The "jewel" of the ring is a container with a removable lid.