There’s much to be said about working on a writing project by yourself. When you’re tackling the first draft of a project, it’s all your own. Of course, if all goes well, you’ll have multiple readers and professionals down the line giving you input so you can shape the story or poem into the best possible version of your vision… But what about projects that you tackle with other writers right from the start?
I haven’t done it too often, but one of my favorite creative writing exercises is where one writer writers one sentence, another writer writes the next, building off that first sentence, and so on and so on. I’ve participated, but I actually haven’t seen any finished products.
I also love alternatively writing with a friend. I’ve written a comic series script with one of my friends and I’ve read a work in progress she writes as letters from one character to another with another writer. It’s a really fun, inspiring way to write. Can’t think of where a story goes next? Leave your part on a cliffhanger and let your co-writer figure out what comes next!
In honor of multi-person writing projects, I’ll go ahead and write the first line to a short piece of fiction. The first commenter can write the next line, and so on! (I apologize if my delay in approving comments gets things out of whack, but it’s all in fun.)
“If Pepper had to explain the origin of her name to one more stranger one more time, she was going to have to start carrying pepper spray with her wherever she went.”
Amy McNulty 
“Life in Tampa, Florida, the sexual predator capital of the world, was anything but easy for a young woman as attractive as her.”
“So far she had been getting by with wearing the pepper spray perfume, Eau de Self Defense, and that kept all but the most dedicated stalkers at bay.”