Arts Collaborative Medford offers a daylong writing workshop led by instructor Katie Willis, author of “The Blue Poppy and the Mustard Seed: A Mother’s Story of Loss and Hope.” In this intensely generative workshop, you will be prompted to generate four new essays, short stories, or poems in the session and have a chance to workshop one of them. Turn on your creative taps, let the creative writing flow, and pull out a draft. Cost is $90. Register through the ACM website.