I've heard alot about interaction between the sims and im inclined to agree. When you get to a stage when you're comfortable with your food and tech points, its fun to just watch them walk around doign weird things.

How about skinny dipping? Given you can only see their head i think that would be hilarious.

Or prehaps a child might "catch guppies" in the creek in the north west corner.

Or maybe counting sand, as a replacement of 'bored'

Hmm maybe even 'rock painting' along the north wall, even if it doesnt show up.

Or prehaps for a bit of fun, desanctifying the well water, if you know what i mean ; )