I just don't trust computer generated random numbers and want to generate ETH addresses with physical dice.

Icebox allows you to for example, use 5 dice rolled 10 times to create a user-defined string that is hashed together with a random string for a guaranteed 128 bits of randomness in your seed.

See https://github.com/ConsenSys/icebox for details.

Has anyone used? Is it trustworthy?

How can we tell if code such as this has been reviewed and is not a con?