Are there cold wallet hardware options for storing Zenon?

A community developer (CryptoFish) is working on a integration with the Ledger cold wallet. As of this response, the ledger code has been submitted and accepted for review by Ledger.

You can follow the progress of the ledger integration on the hc1 dev forum here: https://forum.hypercore.one/t/project-zenon-ledger-app/112