So, given my recent need for blood, 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.
Let's see how much we can give them.
Or do a net search for your country