Any issues with front storage when traveling?

I installed a front hitch with the idea of using it to carry a bike rack. I am now thinking of using it for additional lockable storage. I searched for storage ideas and located pics for cargo carriers with diamond plate truck storage boxes or hard sided plastic cargo boxes. So I am reaching out for some ideas from the experts. For those who have done this what were some of your lessons learned and what method works best for you? I want the storage to be lockable. Thanks.