Hi JLBennet-
Cindy's advice on creating committees based on your parent group needs is dead on.
If it helps, some committees we've heard of or been part of:
Newsletter, Cultural Events, School Directory, Family Events, Hospitality, Lost & Found, Fundraising events (usually has subcommittees), International Liaison, Website, Publicity, Grant Writing, School Spirit, Historian, Buddy Families...
Some good articles here about managing committees:
Parent Group Committees: Tips, Tools, and Advice
Also, check out our file exchange for useful committee files:
PTO Today File Exchange | Organization | Officers & Committees
~Lisa