Lemos Farm in Half Moon Bay is offering a deal for $13 - which includes one day admission for a child and adult ($25 value). It includes train rides, petting zoo, pony rides, tractor digs and other play areas. You'll also get a $5 coupon for a Christmas tree (if you go at the right time of year!).
KGB Deals has a great deal on the fabulous aircraft carrier museum in Alameda. We went there with my dad, who loves this stuff. Even the kids had fun. Take a tour and go to the lookout tower. Ride the platform elevator that is so big it transports planes between decks. See a model of the Apollo 11 command module Columbia, that the first astronauts to walk on the moon, came back to earth in. The USS Hornet picked them up and had astronauts Buzz Aldrin, Neil Armstrong and Michael Collins in in, and was recovered from th USS Hornet and put in quarantine (you can see the quarantine trailer). If that's not enough, there are all kinds of helicopters, airplanes, a simulator ride (extra fee), and you can tour the living quarters. This would be a great Father's Day activity.
The KGB deal: for $12 you get $42 in admission credits (typically, adults are $15, seniors are $12, students 5-17 are $6. You can get two adults and two kids in with this $12 deal. Buy through Thursday, June 2, and use by December 31, 2011. You canpurchase multiple vouchers and even use them at the same visit.
Get 50% off everything on the Snapfish site today, May 30. Use code 50ALLCART at checkout.