The basis of this short project can be found here:
https://edl.ecml.at/Activities/Languagechallenge/tabid/3207/language/en-GB/Default.aspx
In the handbook, there are more than 50 challenges to be completed. These challenges involve the use of several languages and how we can include them in our daily life. Regular online meetings (4 or 5) could be organized so as to share/compare our experinces.