There are some animals that visit your village. Many just walk in, spend two or three coins, and walk out. Some are more useful that that.

Craftsman: The craftsman appears as a blue duck on Da Vinci's flying machine. When he lands, he doesn't spend coins, but will walk over to your workshop and speed things up by about an hour.

Big Spender: The big spender has many different variations in physical appearance, but usually arrives in an airplane or taxi. The big spender does just what their name implies: they spend BIG. When I say big, I mean HUNDREDS of coins. They're good for raising money.

Construction Worker: The construction worker always wears a hard hat and drives in a yellow and black digger. Like the craftsman, they speed things up by an hour, only with upgrades and construction.