Idiom: "Walk on eggshells"

[Tom]

Hi

I would like to know some expressions having the same meaning as:

"Walk on shells"

Could you please help me?

Tom

[Conchita]

To tread very carefully is the only similar expression I can think of at the moment.

Then, according to the context, you could also say:

- to see how the land lies/to get the lay of the land or

- walking/skating on thin ice.