a 'donor card' [=a card that says that you want to donate your organs when you die]
She is one of the charity's/cause's major 'donors'.
The money was raised from individual 'donors'.
(..) Convoy's on it's way. I got a War Boy running on empty. Hook-up that full-life. Hey, careful!! He's a universal donor. Boss, we're not going to Gas Town? Bullet Farm? We're heading east! I'll pass it down the line. (..)2015 Mad Max: Fury Road
(..) So I exist in this wasteland... A man, reduced to a single instinct: Survive. Blood group -O, high octane. Universal donor. Max? Is that you? Help us! Max Where are you ?! Max Where are you ?! (..)2015 Mad Max: Fury Road