And you thought playing with Legos was just a constructive way to spend a rainy afternoon. Turns out some children have been building them into fierce robots and will square off in a First Lego League Robotics Qualifying Tournament for a spot in the regional competition come December. This round hosted by California Lutheran University will feature 24 teams from local schools and their Lego minions, who will somehow carry out a task associated with this year's theme: food safety. Soiland Recreation Center in the Gilbert Sports and Fitness Center, 60 W. Olsen Road, Thousand Oaks. 9 a.m.-5 p.m. Sun. (805) 377-8369.