Most writing advice seems to be directed to individual authors, toiling alone in their offices or their bedrooms. The Thesis Whisperer — yes, she’s talking about academic writing — has suggestions aimed at groups. She has groups of students in mind, but this pair of ideas could work for any writing group.
Two exercises to help you your writing life | The Thesis Whisperer
http://thesiswhisperer.com/2014/06/04/two-exercises-to-help-you-with-your-writing/
sharon p. lynn 
I met my husband on the same university course and I must say when it came to assignments and deadlines I found bouncing ideas off each other the best way to free up blockages in my brain, it also increased creativity and help see the ideas right through to the end, rather than just giving up early on!