An eulife project should derive from the needs of a local community and though abstract it should be fully functional.
It should not be developed while having in mind specific "customer" needs but rather provide the foundation so that it can easily be tailored to address them.
Its user interface should be simple, clean, elegant (following the KISS principle) and pretty straight forward to use by people who know how to use just a keyboard and a mouse.
Some example projects could be a reservation system, a stock management (a catalogue framework can aid you in the development of both).
Projects that could derive from the above could be a library management system, an e-shop, a booking system.
The later do not have to be eulife projects per se, but rather applications developed by individual developers for their customers.