So, given my recent need for blood An 11 BAG TRANSFUSION), I thought, "Why not a blood drive?
It's an easy process. Start here: http://www.redcrossblood.org/donating-blood
There is always an ongoing need for all blood types. Ironically type O Pos, the most common is also the most needed. Next is the AB group, especially neg. It doesn't matter, though, whatever the type you have, they need it.
Or do a net search for your country
Let's see how much we can give them.