December 20

Airport Industrial Park, 3375 Koapaka St., Bloodmobile, 9 a.m.-2 p.m., free. Donate blood and save lives. Pre-registration recommended. (848-4770, bbh.org)

Kailua Town Center, Pali Lanes, Bloodmobile, 3-7 p.m., free. Donate blood and save lives. Pre-registration recommended. (848-4770, bbh.org)

Honolulu Zoo, 8 a.m.-2:30 p.m. Dec. 20-21, 26-28 and Jan. 2-4, $130-$220. Keiki are invited to have fun while learning about animals and what they can do to help the environment. Camps are available for keiki ages 4-5, 6-7 and 8-10. Pre-registration required. (honoluluzoo.org)

Ka Makana Alii, 5-7 p.m., contact for cost. Join Santa at the snowing tree in the Macy’s wing for photos in his sleigh. During the snowfall, keiki can enjoy free crafts and activities at the Pineapple Pavillion. (kamakanaalii.com)

Irish Rose Saloon, 9 p.m.-1:30 a.m., contact for cost. (irishpubshawaii.com)

Blue Note Hawaii, Dec. 20-22, 6:30 and 9 p.m., $25-$45. (bluenotehawaii.com)

Contact for meeting location, 7 a.m., free. Join a 10-mile hike across varied terrain and enjoy views of the Koolau Mountains, ocean and lush tropical valleys. (489-1695, danderhi@gmail.com)

The Republik, 1349 Kapiolani Blvd., 8 p.m., $25-$30. Enjoy live performances by lovelytheband, Flora Cash and special guest Jenny Yim. (jointherepublik.com)

Basalt, 6 p.m., free. Enjoy acoustic, soul and pop music. (basaltwaikiki.com)

Outrigger Reef Waikiki Beach Resort, The Reef Bar & Market Grill, 6-8 p.m., $125. University of Hawaii men’s basketball coach Eran Ganot leads a fundraising event to help the American Cancer Society. Guests will enjoy food, drinks, discussion and a live broadcast of ESPN1420’s “Hoops Talk” show with Jeff Portnoy. (crowdrise.com/o/en/campaign/cvcfundraiserhi)