Get free stuff. Open since early March, the new Lassens Natural Foods & Vitamins store at The Lakes at Thousand Oaks shopping center will celebrate its grand opening from 8 a.m. to 9 p.m.Saturday. Festivities will include samples, displays, cooking demonstrations, raffles and giveaways. You can´t miss the store: It´s in a repurposed Claim Jumper Restaurant next to a man-made lake. (2150 E. Thousand Oaks Blvd., 805-495-2609, http://www.lassens.com)