Support groups are a great way to share field trips, clubs, classes, tutors and more.
Avoid reinventing the wheel. Homeschooling grows more popular every year, and all kinds of homeschooler groups exist in almost every region of the country. You can find local groups, e-mail discussion lists and more detailed information on starting a group through the National Home Education Network. If there is no local group that suits you, start your own. Stick to your convictions about group structure and rules and come up with a name.