 People giving blood through the Community Blood Center of the Ozarks Monday and Tuesday will receive either a CBCO long-sleeve t-shirt, pullover, or hoodie, as well as a beach towel, plus a chance to win four free tickets to Silver Dollar City. The CBCO is currently low on O positive, O negative, and A negative types. The CBCO has donation centers in Bentonville, Springdale, Joplin, and Springfield, Missouri. More about donating blood at cbco.org.