Columbia is a good place to camp. There’s bathrooms and showers, fire pits and picnic tables, and a place to plug in and recharge your electronics. There’s also a trail leading into town with lots of stuff to do with the kids and a few restaurants and general store. Mariposa is the best place to access Yosemite, they have rental cars, make sure to call ahead to reserve. Monterey Bay Academy (CA66) is a nice grass strip next to an un-crowded beach, it’s private but they let people land there any day of the week except Saturday, more info here:
http://oceanshoreaviation.com . Watsonville just to the east has a nice restaurant on the field. Half moon bay has a nice restaurant on the field, but I would go park down on the south end. You can walk to many nice restaurants. There’s also nice bluffs with hiking trails to the west of the airport with beach access. There’s a fire pit, fire wood, and picnic table at the south end of the field. I called and confirmed they do allow camping but I haven’t yet, camping is $10 a night. Petaluma has the Two Niner Diner. Santa Rosa has a restaurant on the field, the Jet Center has courtesy cars, you could drive over and check out the Geyser in Calistoga. There’s several other things to do near by also. You can stay at Wilma’s Sea Cottage in Mendocino and use their hangar and car from the Little River airport, you need to call and schedule. Gravelly Valley is a nice place to camp, nothing but a fire pit down on the south end close to the lake. There’s always plenty of drift wood scattered along the shore to collect and make a fire. There is a bathroom a couple hundred yards away at the public campground (car camping) and a water spigot, not sure if it’s potable. Alpine is another place you can camp south of Tahoe and Minden. You could do some hiking there, it’s close to a reservoir and the Carson River. To see the Redwoods, KCEC and KACV both have rental car places on the airport. I would call both and find out which is cheaper. Also, if you’re in the area I wouldn’t miss Lucas Lodge in Agness Oregon. They have cabins you can stay in that are nice and CHEAP, less than $100 a night. You can get your meals there also served family style, they are always good and resonably priced. You can walk down to the Rouge River and go swimming on a hot day. There’s also trails for hiking.
http://www.lucaslodgeoregon.com . Fly into Gold Beach and you can go on a jet boat ride on the Rouge. Other options for camping in southern Oregon are Powers and Toketee.
Oh, and let me know when you’re out here! I’ll fly over and meet up with you guys somewhere if I can.