Today is more of a tip than a true tutorial.
You know all those spare parts that come with your sewing machine...and sometime the case the company gives you is just not that cool. Here is the solution. I am not sure of the technical name but I call them squishy tubes.
I have found them at Home depot in the tool box section, but I am sure all home improvement stores have them. They come in various sizes and colors.
You squeeze the end with the hole cut in it to open up the tune. When released it closes tightly. I have carried many around with various needles, thread, feet, and so on in them and have never had a spill.
Love my squishy tubes!!! I have one for each machine.