Indulge your love of pie while you help battle cystic fibrosis. You can enter your favorite pies in the contest (drop off 10 a.m.-noon) or just pick out your favorites to bid on beginning at 2 p.m. There's a $10 fee to enter the contest or register for the auction. Get more info at piedayforcf.passioncff.org. In the park's Boise Pavilion.