My sewing kit contains what I need for the current travel project which is always a hand project, so my kit changes with each project. Currently my project is hand stitching on quilt as you go wool and flannel blocks so my kit contains a hinged metal box with an assortment of Perle cotton threads , a small needle book with an assortment of needles a few appliqué pins and my heavy duty needle threaders and a small pair of very sharp scissors.
when this project is finished next in line is an EPP project, my kit will completely change. Containers are different, tools, threads, everything. Part of my enjoyment is putting together my projects to take with me, with everything organized and easy to use whether sitting in a waiting room or getting a15 minute break to sew.