Gem Faire, all weekend! Starting at 10 a.m.

The Gem Faire at the Orange County Fairgrounds brings a plethora of shiny minerals to delight the eye and, ideally, the pocketbook as well.

OC Fairgrounds, 88 Fair Dr., Costa Mesa, CA

Trail Clearing and Weeding, Saturday, 8 a.m.

What could be a better way to spend your Saturday than by clearing weeds from paths? Show your concern for native California lands through volunteering. Explore seasonal changes as you spend a few hours in beautiful surroundings with a dedicated crew making trails accessible for Conservancy visitors. You may also help protect food plants for native wildlife by eliminating invasive weeds, those pesky botanical invaders. Drinks and sandwiches provided. Reservations required.

Donna O'Neill Land Conservancy, 28672 Ortega Hwy., San Juan Capistrano, CA; 949-489-9778

Hornblower's Mother's Day Dinner & Brunch Cruises, 10 a.m. and 5 p.m.

Surprise mom this Mother's Day with a nice boat cruise, complete with a decadent meal, champagne and salty sea air.

Hornblower Cruises, 2431 West Coast Highway, Newport Beach, CA