Emphemeral Storage on Non Root Volume attached to my instance

Hi Everyone, I have an use case of creating ephemeral volumes use non root volume on my instance. To elaborate more on my setup, i am using EKS with EC2 instance as the compute option. My AWS EC2 instance is launched with a root EBS volume and a data volume. So far I have been creating an emptyDir as ephemeral storage/scratch space for my pod which gets allocated from the root volume. Now i am looking for a solution to get scratch space/ ephemeral storage from the data volume instead of root volume. Considering these volumes are pre-provisioned i am not lookin for solutions that is based on dynamic provisioning. Also i would like to skip hostPath as a solution considering the security issues associated with it. Can someone provide some guidance here as what would be the recommended choice for solution. I am currently evaluating local volume as one of the potential solution.