The awl is a good idea. Do not have a lot of use for it, but would come in handy for heavier jobs, thank you.
My bachelor kit is basic. I keep it in a small plastic box that seems to be old school plastic from the 70’s and has withstood the test of time.
“Button and Carpet thread”, two spools, one black, one white. If the item is not white, it gets the black thread. If I take the time to throw stitches into something, the thread is not going to be the weak point. Seven large safety pins. Had them forever, likely 1950’s vintage and two have a big pink plastic ‘baby head’ on them, for cloth diapers. Bunch of straight pins. Maybe 30 or so just accumulated from buying shirts and stuff. Two thimbles. I - ~2” x 2” piece of leather cut from an old boot. Several needle threaders for the reason listed above. I will have to look into them new fangled ones though! Needles. I have the plastic ‘wheel’ thing with an assortment, but only use the large ones. It is just a nice way to keep them, for me anyway. I have a few cardboard packages of new ‘larger’ needles of the size for the button and carpet thread as backups. Buttons, there is an assortment of random buttons in the box. Maybe 20 or so, a few of different sizes from shirts, pants, coat. “patches” I cut from the box of old clothes that sits in the closet, jeans, shits, khakies, towels… That is all I have ever needed to take care of any sewing job.