Resetting hardware owned by deceased family member.

My mother recently passed away and I discovered that she had both an iPad mini 2 Wi-Fi, Cellular and iPhone 7 - both barely used. I am *not* interested in accessing the accounts therein (icloud, email, photos, etc.); I know about the "court order solution" for those things. Even so, I cannot figure out how to factory reset either device without knowing the password for her Apple ID. Is there a way to reprogram these items so that they can be used by someone else? Is this something that can be done at an Apple retail location?