January 21

The Surfjack Hotel & Swim Club, 2-4 p.m., $45. Join owner and textile designer Amerji Ghag of lifestyle Kailua Boutique Island Bungalow Hawaii for a worldly block printing workshop. (islandbungalowhawaii.com)

1600 Kapiolani Blvd., 12:30 p.m., free. Learn the benefits and technique of interval training. (377-6626)

449 Kapahulu Ave., Suite 101, 12:30 p.m., free. Learn the benefits and technique of interval training. (445-9227)

Happiness U, 675 Auahi St., Suite E3-205, 2-3 p.m., $25. Explore some key principles that bring success in life. Reservations recommended. (yourhappinessu.com)

Pearl Harbor Bike Path, 98-138 Hila Place, 4-6 p.m., free. Use HBL’s recumbent tricycles for an invigorating sunset ride. This is the next level up from the Senior Orientation Trike Ride. Pre-registration required. (735-5756)

Anchor Church, Bloodmobile, 7:30 a.m.-1 p.m., free. Donate blood and save lives. Pre-registration recommended. (848-4770, bbh.org)

Koko Marina Center, Walgreen’s parking lot, 8 a.m.-noon, free. Donate blood and save lives. Pre-registration recommended. (848-4770, bbh.org)

Atherton Performing Arts Studio, 738 Kaheka St., 4 p.m., $15-$25. Grammy-nominated violinist Corey Cerovsek will be joined by four members of the Hawaii Symphony orchestra, Iggy Jang, Anna Womack, Anthony Arnone and Mark Votapek for an afternoon chamber music concert. (picamusic.org, 256-4336)

Pearlridge Center, Downtown Center Court, 1-4 p.m., free. Approximately a dozen artists will gather and create cooperative art. Keiki and their families are invited to participate or just watch these comic masters in action. (203-2366, pearlridgeonline.com)

Hyatt Centric Waikiki Beach, 8:30 a.m., $35-$1,000. Following completion of the walk, a brunch and poolside party will be held at The Lanai restaurant. (237-1234, hyattcentricwaikikibeach.com)

Pearl City Library, 1138 Waimano Home Road, 1:30-4 p.m., contact for cost. These workshops give women skills to build confidence and successfully negotiate salary, promotion and benefits. (545-6007, aarp.cvent.com/worksmart2018)

Living Art Marine Center, 3239 Ualena St., 10 a.m., $25/kit. Make your own aquaponics system with plants to grow and actual fish to take home. (livingartmarinecenter.com/family.htm)

The Laylow, Autograph Collection, 7-10 p.m., free. (laylowwaikiki.com/event-directory)

The ARTS at Marks Garage, 1159 Nuuanu Ave., 5 p.m., donations appreciated. Female playwrights will be showcasing their unproduced works. (facebook.com/hawaiiwomensvoices)

Gallery On The Pali, 2500 Pali Hwy., Jan. 7-Feb. 23, gallery hours, contact for cost. View the photographic work of Debra Casey. (595-4047, gallery@unitariansofhi.org)