I am another ice cube muncher through my pregnancies and labours too.

I will just walk up, open the freezer and grab out a cube or 2 to chew on, or get a glass of water and shover 5 or 6 cubes in it. One the up side, it is making me drink more water

But yes, be careful of your teeth, I have done damage to mine chewing on so much ice.
Atleast it's a non fattening craving to have.

Funnily enough, both Noah and Tehya love ice now too.