MIXAMO/UE4 Workflow - how do you add an object to a character with animation in it smoothly

Hey UE4’ers,

I was wondering the best (or quickest way) to add an object to a Mixamo rigged character with Mixamo animations in it. We’re trying to add a backpack, and just wondered what the smoothest way would be so it’s attached to the character and doesn’t go through any of the geometry.

What is your workflow like for something like this?