Caroline,
It struck me you might enjoy the Random Line Generator, (RLG) which we do on WW at the begining of each month.
A designated member gives the rest of us a line which then we have to use as the opening line of a piece of writing. The lines vary wildly, sometimes funny, sometimes serious, stark, evocative, parrotts...you name it we've had it.
The writing can be anything that you're moved to do having read the line, long, short, prose, poem..anything, as long as it starts with the RLG line. It usually throws up some excellent pieces, and gives people a break from their own projects, specially if they're struggling a bit.
Oh, and it's great fun!
Why not keep a look out for the thread at the beginning of August, if you're about? Its usually posted in the Writing Exercises Forum, though you also should find it on the main Forum Board, because lots of folk will be joining in. No pressure, no time limit, and a good way to meet other WWers.
tc