Cage Dive next to Great White Sharks

According to the company Cage Diver, completely uncertified divers can "cage dive with great white sharks the size of cars. Travel by luxury boat 30 miles offshore to San Francisco’s Farallon Islands for an incredible day of shark diving. The Farallones are considered one of the top two hotspots for great white shark viewing in the world."
Prices:
$875 for cage diving
$375 for topside viewing

Improvised Teeter-Totter

Take the best of what the ocean delivers, add kid ingenuity (and a little adult initiative) and you get a home-grown teeter-totter.

The Adventures of Chip

There's nothing like an adventurous Chihuahua and a bunch of feverish kids: