Flying a Kite -- You can get a guaranteed-to-fly kite at the Big Wind Kite Factory (tel. 808/552-2364; www.bigwindkites.com) in Maunaloa, where kite designer Jonathan Socher offers free kite-flying classes to kids, who'll learn how to make their kites soar, swoop, and, most important, stay in the air for more than 5 minutes.
Spending the Day at Murphy (Kumimi) Beach Park -- Just beyond Waialua on the East End is this small wayside park that's perfect for kids. You'll find safe swimming conditions, plenty of shade from the ironwood trees, and small pavilions with picnic tables and barbecue grills.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.