Hi Scott,
You're really close, you just have an extra piece. All you need is the index, not the object directly. So if you click the 4th avatar, you only need to store "4". Use the "index of..." block.
And then later, you can tell item #4 to show in a new tag list. Use the "get item..." block. See the image below. I changed the tag names a little, so they might be swapped with yours.
Let us know if anything is unclear, and we can record a video!
- Nav