You can even cast hollow shells filled with powder and use them.

At first glance the missile seemed to be nothing but a hollow shell.

"The regulations will prove to be a hollow shell if the resources are not available."

Stephen's hand, free again, went back to the hollow shells.

Some were hollow shells, others held items that would be needed for the operation.

It leaves a hollow shell and causes the tree to die.

Suddenly she did not feel like a burned-out, hollow shell of a being.

I am a hollow shell, the crab's died, there's nothing left inside.

No fire had been built within that hollow shell for years.

She felt every bit the hollow shell she must have looked.