Fish Earth Day: Professional fishing guides offer workshops for youths ages 6 to 16 to learn about casting, conservation, fish safety, knot tying, catch and release tactics and more. The first 80 kids to register get a free rod and reel. Registration required. 9-11 a.m. Saturday. Free. Craig Park, 5 Beekman Way, Tarpon Springs. (727) 942-5628.
Antique Appraisal Fair: Bring dolls, trinkets and treasures (or a photo of larger items, such as furniture) for appraisal. All proceeds benefit the library's children's area. 9:30 a.m.-1:30 p.m. Saturday. $5 per item donation or three items for $10. East Lake Community Library, 4125 East Lake Road, East Lake. (727) 773-2665.
Pinellas Pioneers Association Picnic: Anyone interested in learning about and preserving the history of Pinellas County is encouraged to meet at shelter 3 for fun and socializing. Bring your own picnic basket of food, eating utensils and folding chairs. 10 a.m. Saturday. Free. Eagle Lake Park, 1800 Keene Road, Largo. (727) 441-1338.
Revolution Roller Derby: Put a folding chair trackside for a close-up view as the Rolling Valkyries take on the Ocala Cannibals in a flat track women's roller derby bout. Bring canned food items to benefit the FEAST food pantry. 5 p.m. Saturday. $8 advance, $10 at the gate. Sunderman Recreation Complex, 1601 Ninth St., Palm Harbor. (727) 280-7981.
Flashlight Egg Hunt: Kids ages 5 to 12 need to bring a flashlight and a basket to hunt for thousands of eggs at this Easter-themed event with arts and crafts, games and a hot dog picnic. Golden eggs may be redeemed for prizes. 6:30-8:30 p.m. Saturday. $8 advance, $12 after April 9. Martin Luther King Jr. Recreation Center, 550 Laura Lane, Dunedin. (727) 738-2920.
Bronson Music Festival: Bands include Razed by Wolves, The Posse Band, The Skywire Project, Higher Ground Band and Reckless Mercy; and comedy by Steve Coderre. Proceeds support The Bronson Project, Sept. 30-Oct. 5 in Lake Wales, bringing hope and meeting needs in the name of God. 1-8 p.m. Saturday. $5 donation suggested. Nauti-Nancy's Food Shack & Crows Nest Pub, 700 Eldridge St., Clearwater. (727) 446-3717; salvationsaloon.com.
Clearwater Community Band: Doors open at 1 p.m., jazz band performs at 2, followed by the concert band at 3 p.m. Saturday. Free (donations appreciated). St. Petersburg College Clearwater Campus Arts Auditorium, 2465 Drew St., Clearwater. (727) 365-8017.
Dunedin Military Tattoo: This huge annual event lets Dunedin show off its Scottish pride with massed pipers and drummers, Scottish Highland dancers and school marching bands. 7 p.m. Saturday. $12 advance, $15 at the gate. Dunedin High School, 1651 Pinehurst Road, Dunedin. (727) 465-6229; dunedinhighlandgames.com/tattoo.html.