This is what I think of when I think of leaves:
Piles of them. Suddenly one of them explodes. My cat has pounced on....a leaf? But which one? She doesn't know either as it seems she changes her aim with every lunge. She is spastic, twitching, wild-eyed and it's so entertaining.
It's one of my favorite "leaf" themed memories.
Secondly, laying on the ground under a tree is extraordinarily calming and (obviously?) re-grounding. The simplicity of the act doesn't match it's power.
Note to self: go lay under a tree.