-For everyone-
Laughing
Napping (second this idea!)
Singing a song

-For the grown-ups-
Taking a bath
Painting the hut

-For the kids-
Building a sand castle (would love to see the sandcastle!)
Hide and seek and tag (also great ideas, PE)
Collecting seashells

-Post-burial funerals-
Missing Yoki (or whoever)
Telling stories about Yoki's life
Blessing Yoki's grave

-Special magical stuff-
Levitating
Walking on water

It would also be cool if they built a campfire and then cooked food on it, told stories around it and stuff like that.

I also really liked the idea that PE had about starting a new game over with a group of existing villagers. It seems like they need something to do at the end of the game. (I'm still sitting here with 11 of 12 puzzles -- my first sucessful game. Almost there!)