Revocable Living Trust

http://www.kaiserlawfirm.com/kaiserlaw/files/RevocableLivingTrustsBrochure09.pdf

See page 14.

http://wills.about.com/od/planningfordisability/a/trustavoidsgorc.htm

More discussion about how to avoid guardianship (court appointed guardian for children) and convservatorship (court appointed trustee for your property). 

Everyone with children should have one. Talk to a lawyer.