There will be blood!

  Since I came of age and had the legal right to do so, I am a blood donor. Both when I lived up north and on the west coast, I have frequently visited a central to donate some blood. What did I get for it? A sandwich, cup of coffee and some drink. So not exactly like you've done it to get rich, but that was not the intent.

But how does it actually work if you have to do it in Germany? 

To become a blood donor in Germany, you must be between 18 and 68 years old, weigh at least 50 kg and be in good health. It is also important that you do not have a chronic disease or an infectious disease that can be transmitted via the blood. This is checked through a health examination that includes questions about one's health and lifestyle, measurement of blood pressure and blood count, and a physical examination.
It is thus quite similar to Sweden. 

As a blood donor in Germany, you usually receive a thank you card or a gift after donating blood. The gift can vary depending on where you donate, but it can be something like a t-shirt, a gift card, a free tickets to a movie or event. Some organizations may also provide a smaller amount of money as compensation for any costs that may arise in connection with blood donation, such as travel or lost income. However, this varies between different organizations and rules may also differ depending on the region of Germany.
This is as well quite similar to Sweden. Although you cannot receive any financial compensation for lost income, there are several employers in Sweden that make it possible for you to donate during working hours.

Where do you go in Germany? In Germany you can donate blood to several different organizations and blood services. Here are some of the biggest:

• Deutsches Rotes Kreuz (DRK) - The German Red Cross is one of the largest blood donation organizations in Germany. They have blood services throughout the country.
  
  
• Blutspendedienst des Bayerischen Roten Kreuzes - The blood service of the Bavarian Red Cross is responsible for collecting and distributing blood in the state of Bavaria.
  
  
• Blutspendedienst West - The blood service for western Germany has units in the states of Hesse, North Rhine-Westphalia and Rhineland-Palatinate.
  
  
• Blutspendezentrale der Universitätsklinik Düsseldorf - The blood service at the University Hospital Düsseldorf is responsible for collecting and distributing blood and blood components in the area.
  
  
• Johanniter-Unfall-Hilfe eV - Johanniter is an organization that offers emergency medical services and humanitarian aid around Germany, including blood donation.

There are also other smaller organizations and local blood services in different regions of Germany that you can turn to to donate blood, but it is very regional.