Here is a summary of the additional hints so far:
Hint for #2:
All those supplies need to be saved in their proper location.
Hint for #3:
You can also swap heads with anyone else.
Hint for #5:
PaintShop Pro can use several Photoshop supplies.
Hint for #9:
I certainly prefer the “old” Materials palette.
Hint for clue #12
It took me at least half an hour to show how to turn someone into a witch. That was a spooky video.
Hint for #13:
The “sandwich” helps teach beginners about layers.