I try to keep things to a minimum. Most people look like they are moving in and never touch 1/10th of it. I precut about 3 or 4 projects for a 4 day retreat. I get it to a point where things are cut and marked and I can just sew, sew, sew. If I finish the blocks, I usually wait to bring them home so I can lay them out on the floor. There is usually space on a designing wall that somebody has but I usually am doing large quilts and it is easier on the floor. I usually have a little tray and I can square up and bring some square rulers that will work for the project but leave most in the car. I carry in my sewing machine, a plastic tote, and my clothes and hat is it. If it don't fit in the plastic tote it don't go.