I wanted a small, light, and reliable sewing kit for my gear repairs on the field.
I have dropped one of these in my backpack and another in my car, so I always have a repair solution for my tarp, backpack, trekking pants, etc.
I usually rely on three thread types but also provide 2-spools and 4-spools models.
Use your drill with a 4 mm hexagon screwdriver bit to wind your threads (start winding the top spool and end up with the bottom one):
Note: You will also find a small indent on the opposite side of the hexagon hole. For instance, this can be used with a nail's tip or a sharp table's corner to help rotate the spool on its axle while winding the thread.
The spool storage hole can easily contain two needles and an awl. I place a tiny piece of cotton fibres at the bottom of the storage hole to silence the needle clicking during transportation. And another cotton piece to close the storage hole and prevent the needles from accidentally falling while opening the kit (for this purpose, I also sometimes use a cotton tab that I cut at the right length and that I place into the hole to close it up with the uncut tab tip slightly protruding for easy removal).
You can use a Paracord for the lanyard, but I suggest using a smaller-diameter cord. Start by inserting the cord's tip in one hole; it will exit through the other one.
The lid has small indents that you can use to secure the needle butt and help the needle to go through the fabric, as you would do with a sewing thimble.
Enjoy.
The author marked this model as their own original creation.