WikiPedia invites you to join the USCOTW: the “US Collaboration of the Week.” You don’t have to live in the US to help out! For two weeks the focus is on George Washington. The site allows you to vote for other nominated topics, or nominate new ones.
Have students at home for the summer that need some brain-engaging work? Ask them to join you in contributing to the further development of WikiPedia, either on the USCOTW or another page! 🙂