Master of Public Health Volunteer/Work Experience

I'm thinking about applying for a Master of Public Health program, and I'm wondering if anyone can provide any advice or recommendations regarding places for work or volunteer experience (other than obvious places such as hospitals).

If this information's helpful: I already have a Bachelor's degree (double major in psychology and biology), and I primarily have interests in epidemiology and biostatistics, but I'm open to other fields within public health.

Thanks in advance for any information.