Blood Drive: Donate blood inside the climate-controlled OneBlood truck. Donors will receive a 9/11 commemorative shirt and $20 eGift card, plus a wellness checkup including blood pressure, temperature, iron count, pulse and cholesterol screening. Paddles Up The Creek food truck will be on-site. Free. 10 a.m.-3 p.m., Arts Center of Coastal Carolina, 14 Shelter Cove Lane, Hilton Head Island. 843-842-2787 or artshhi.org.