February 19

American Red Cross, Hawaii State Chapter, 4155 Diamond Head Road, 8:30 a.m.-2:30 p.m., $110. Get trained to recognize and care for victims of illness and sudden injuries and life-threatening respiratory or cardiac emergencies in adults, children, and infants and learn how to use an AED. Pre-registration required. (1-800-733-2767, redcross.org/take-a-class)

American Red Cross, Hawaii State Chapter, 4155 Diamond Head Road, 8:30 a.m.-1:45 p.m., $90. Get trained to recognize and care for victims of illness and sudden injuries and learn how to administer CPR and use an AED for life-threatening respiratory or cardiac emergencies on adults. Pre-registration required. (1-800-733-2767, redcross.org/take-a-class)

Ho‘omaluhia Botanical Gardens, Feb. 19 and 22-24, 9:30 a.m.-2:30 p.m., call for cost. Learn how to dye tissues and newsprints, and learn to use them in creative ways. Pre-registration required. (395-4702, sraoahu@hawaii.rr.com)

Wahiawa Botanical Garden, 9-10 a.m., free. Bring potted plants, branches, fruit and leaf samples to look at under a microscope and learn more about any horticultural topic. Pre-registration required. (522-7066)

Honolulu Hale, 6:30 a.m.-1 p.m., free. Donate blood to save lives. Appointments recommended. (848-4770)

Oahu Veterans Center, 11 a.m.-3 p.m., free. Donate blood to save lives. Appointments recommended. (848-4770)

Punahou School, 6:30 a.m.-3:30 p.m., free. Donate blood to save lives. Appointments recommended. (848-4770)

Blaisdell Exhibition Hall, 777 Ward Ave., Feb. 19 from 4-9 p.m., Feb. 20 from 9 a.m.-6 p.m., Feb. 21 from 10 a.m.-4 p.m., $5. The 26th annual Hawaii Collectors Expo offers antiques, paintings, coins, stamps, sports cards and more for attendees. (486-4766)

Hawaii Prince Golf Course, 9:30 a.m. check-in, 11:30 a.m. shotgun start, $600/three-person team. Maryknoll School presents its annual golf tourney, with funds benefiting the school’s athletics program. (maryknollschool.org/events, 952-7370)

HawaiiUSA Federal Credit Union, Community Room 1226, 10:30 a.m.-12:30 p.m., free. Celebrate National Parent Leadership Month and outstanding parents who were nominated by their loved ones. (526-1222)

Wet ‘n’ Wild Hawaii, 4-8 p.m., free. Enjoy food trucks to satisfy any taste, island crafters and other Hawaii-made products. (479-5525)

Blue Hawaii Surf at Ala Moana Center, Feb. 19 from 11 a.m.-6 p.m., Feb. 20 from 11 a.m.-7 p.m. and Feb. 21 from 11 a.m.-6 p.m., free. Check out Uncle Clay’s House of Pure Aloha’s shave ice at a special pop-up in Ala Moana Center. (351-3588)

Waikiki Elementary School cafeteria, 3710 Leahi Ave., Feb. 19-20, 8 a.m.-1 p.m., free. Rotary Club of Waikiki hosts its sixth annual garage sale to benefit the school and its youth activity programs. Items for sale include books, clothing, toys, appliances, furniture and much more. Item drop-off is welcome from 5-7 p.m. Feb. 19. (waikikirotary.org)

Blue Note Hawaii, Feb. 19-21, 7 and 9:30 p.m., $25-$45. (bluenotehawaii.com)

Iolani Palace, noon, free. (922-5331)

Lola’s Grill and Pupu Bar, 1108 Keeaumoku St., 7:30-10 p.m., free. (lolashawaii.com)

Kaimuki High School Auditorium, Feb. 19-21, 26-28 and March 4-6, Fridays and Saturdays at 7:30 p.m., Sundays at 3 p.m., $15-$10. Kaimuki High School Performing Arts presents “Once on This Island,” a story of love loosely based on “The Little Mermaid.” (733-4913, honoluluboxoffice.com)

Ronald Bright Theatre at Castle High School, Feb. 19 and 20 at 7:30 p.m., Feb. 21 at 3 p.m., $12-$8. In the Roaring Twenties, a young girl sets out to be modern and score herself a rich husband. (showtix4u.com, 233-5626)