3,930 bells
Wisp Midnight - 4 a.m.
If you have been lazy and haven't been picking your weeds Wisp will pay you a visit late at night. He will be invisible and hiding in one of the acres. Wander around until you hear him whisper to you. He will materialize and ask you to catch 5 spirits hidden throughout your town. If you walk around with your bug net and catch all 5 spirits, bring them back to Wisp. He will reward you by granting you a wish. He will give you the choice of either painting your roof, picking all the weeds, or giving you an item.