Why hasn't a promotion been developed where a major fast food chain gives every blood/plasma donor a coupon good for a burger when they leave the blood donor clinic?
"Just bring this coupon to one of our franchises, and to thank you for donating blood, we'll give you a burger."
The promotion would be great for the blood donor operations, and it would likely not cost the fast food firms much (net) either, as people cashing in the burger coupon would likely buy more food and drinks.
When I was a teen, helping out at the Red Cross blood clinic in Muskegon, Michigan, many years ago, blood donors all were taken into a huge kitchen area where other volunteers cooked excellent, unique, and good-sized burgers for everyone who donated blood (and for the volunteers and nurses).
It was a treat, and I can still remember the unique smell and taste of those burgers. But it was costly in terms of the time of all the extra volunteers, the space needed to prepare and serve the burgers, and the food itself. Why not partner with a fast food chain instead? They would get the advertising benefits, and it might induce a few more people to donate blood more often (in economics jargon, though, I have no idea what the burger elasticity supply of blood would be).
An ideal situation would be to run the promotion in a few locations and compare before and after donation data with locations not running the promotion. If the blood collectors didn't run the comparison, the burger provider would likely want to have some idea about the effectiveness of the campaign.
It wouldn't have to be a burger, though. It could be a breakfast sandwich or a milkshake or some chicken nuggets or a specialty doughnut.
And maybe "Burgers for Blood" wouldn't be the best idea for the promotional slogan.