The website Glocken.org is a sister project of handbells.eu, where you can find information and links about bells in general.
https://www.glocken.org/ (in German)
The website Handglockenchor.de is another sister project of handbells.eu with information about the handbell choir of the adventist church in Hamburg.
https://www.handglockenchor.de/ (in German)
https://www.adventgemeinde-grindelberg.de/ (in German)