I thought it would be fun to participate in the C.R.A.F.T. -- Creating Really Awesome Free Trips link-up.
10 FREE (AND ALMOST FREE) THINGS TO DO ON THE ISLAND OF OAHU, HAWAII:
1. Sharks Cove: (Named for it's shape, not for having sharks) Perfect beach for kids... and adults to explore. I've always loved tide pools. This one is beautiful.
(google images)
2. Matsumoto Shave Ice: The absolute best on the island. Then you can walk and shop around Haleiwa Town.
3. Watch big waves on the North Shore during the Winter:
(google images)
4. Maunawili Trail Hike:
(google images)
5. Kapiolani Community College (KCC) Farmer's Market: Browse around and try all kinds of food samples.
6. Stroll through Waikiki -- Fireworks, Entertainment, Street Performers, Activities, Lots of Cute Shops...
(Free Entertainment and Activities at The Royal Hawaiian)
7. Have a Picnic at Moanalua Gardens:
(google images)
8. Antique store hopping in Kailua Town:
(google images)
(google images)
10. See an Ancient Fishpond in Heeia:
(google images)
For even more ideas... go here.
To see things to do in other cities go here.