Maybe there could be a cave, and you could buy a pick axe.

I really cant agree on any of the ideas that have come up so far. If I had to choose, I would say seashell room. I guess I'm just fine with the rooms they already have. I would rather see an expansion to Brewsters .

The Roost.

Maybe you could go out and collect some types of herbs or beans that You and neighbors can grow, and Joan sells you the seeds to make differant types of coffee, and once you get the ingredients for all of them, he gives you a present. And certain types of beans can only be grown in certain seasons and such.

I would have to go with the sea shells idea. Its just an AC idea isn't it

Minerals/gems also sound good. Caves sound like a pretty fun idea, so it would make sense to be able to dig them up there.