In lot of communities people help each other on order to grow older gracefully. Retired people find a new meaningful activities. They also collect helping time on an account. Later on they either spend the time in order to get help them-selfs or they can get money for the service.
The project runs in a lot of communities in Germany like
- Börderland (http://www.generationenhilfe.de/)
- Haar (http://www.handinhandinhaar.de/)
Here another article on the topic in German: http://www.faz.net/aktuell/wirtschaft/seniorengenossenschaft-altersvorsorge-ohne-inflationsangst-12014610.html