Haven & Hearth is an amazing game, but there is nothing ground breaking or never seen before systems in it. Here is my idea, eating food! Lets say you want to eat an apple. This would work like drinking water, except it would involve more mastication. Here is how you would eat that apple.
1. Find an apple tree
2. Climb the apple tree
3. Find a particularly good-looking apple, ripe and free of blemishes
4. Apply your hands to the apple, take it for your own
5. Bite into the apple
6. Chew slowly and savor the taste
7. Remember to swallow
8. ???
9. Profit
And there you have it! How this would work code wise, is there would be foods of all sorts available from different resources such as trees or animals or rivers, and once eaten would restore hunger and maybe even improve your character. This idea would work for a wide range of content, but I am just throwing this out there. Thanks!