I was thinking about the high-jumper buff and even though I *think* that I understand why spinach is the item that gives you the buff, it seems like there would be jumping beans instead. Or in addition to spinach, I suppose.
If you had jumping beans instead of spinach, you could have them grow into trees that, when fully mature, are able to "jump" around boards and become able to harvest when the player can successfully click them three times. They could move like chickens and butterflies to make it a bit challenging to get the jumping beans.
Just a silly thought.