"TOY" or Mechanic Ideas - Game Design

Brainstorming time for potential mechanics!

1. Interchangeable Environment - Press a button and the environment around you changes. Could be super easy to incorporate this into a story. Top down, or third person would work best for this.
2. Shapeshifting - Player character or another enemy changes shape when you confront it or press a button.
3. Transform non-sentient items into sentient - Button you press/weapon that turns inanimate objects into minions that follow you. Most likely thinking of something like boulders or kitchen items.
4. Edible Weapon - A weapon you can use to attack, but also can consume when you run low on health. Once you consume, it's gone, though.
5. Enemies that change with environment - Change in lighting (i.e. spyro dark level enemies), change in water, change in lava, etc. etc.
6. Puzzle that requires using clues in the environment to solve - Arrange tiles in a certain way based on things that appear in the environment
7. Puzzle that requires searching for objects and then placing them - Ancient tomb or something that needs tablets to open with certain designs on them
8. Sighting - Finding hidden objects/seeing them and receiving points. In a large environment with many buildings, tiny animals or sculptures
9. + 10. - Spotlights/Climbable Assets - Tall assets to climb up with spotlights that, if you're caught in, you have to start over. Must make it to the top to win.