Five ideas for family fun this weekend:

Puppets Ole: The puppets at Oakland's Children's Fairyland celebrate Cinco de Mayo a little early on April 17 and 18 with a fiesta show at 11 a.m. and 2 and 4 p.m. Stroll around the park, ride the toddler-friendly rides and catch the puppet action when Mondinga the Cockroach tries to choose between her many suitors. Tickets: $7, including rides and entertainment; www.fairyland.org.

Calling all Heroes: The planet is doomed and only our intrepid hero can save the day — with a little help from the audience in Kenn Adams' Adventure Theater extravaganza. Join the interactive, zany fun at 1 p.m. April 18 at Concord's Under the Sun Studios. Tickets $12; www.kennadamsadventuretheater.com.

Turning 12: Berkeley's Habitot Children's Museum is celebrating its 12th birthday with an all-day party featuring Loveee the Clown, bubbles, puppets, cake and punch. The fun runs from 9:30 a.m. to 4:30 p.m. April 17. Tickets: $8.50, www.habitot.org.

Conducting Clowns: The San Francisco Chamber Orchestra and Circus Bella host a wild, family-friendly concert dubbed "So You Wanna Be a Conductor!" Investigate what it takes to wave that baton at noon April 18 at Oakland's Laney College Theater. Free; www.sfchamberorchestra.org.

Lions,

Tigers & Grover: "Sesame Street LIVE" is heading for Oakland's Oracle Arena in June, but Bert, Ernie and Grover are popping in for a little quality time at the San Francisco Zoo this weekend. Pose for pictures, give Ernie a hug and enter contests to win "Sesame Street LIVE" tickets during the festivities, from 10 a.m. to 4 p.m. April 17 and 18. Tickets: $9-$15, www.sfzoo.org.