Here is the modern version... https://www.amazon.com/HeatnBond-UltraHold-Iron-Adhesive-Inches/dp/B000XAMYXI/ref=sr_1_6?crid=PYZ9CFH4N0U6&dchild=1&keywords=fusible+webbing+for+fabric+applique&qid=1633961041&sprefix=Fusible+webbing,aps,938&sr=8-6
Buy a pack of this stuff, and you'll never spend hours cussing, trying to stitch a patch on the inside of a pair of jeans!
You use better parts of jeans too worn to save for the patch. I actually sent several "ready to apply" iron on patches in denim and khaki with our sons when they went off to college.
If you've got boys, you iron on patches on the knees of their jeans *before* they wear them!
Summerthyme
Not just boys - our then six-year-old "pretty little girl with curly blonde hair" wore out the knees of "double knee" jeans ;-)
Other prep ideas:
There is a convenient sewing awl that works well on leather (and other heavy fabrics). It's the Speedy Stitcher from Speedy Stitcher® Sewing Awl Kit - Sailrite and it's about $20US. You might also find it at Walmart, Ace Hardware or Amazon. I used one to repair the handle on my wife's leather Bible cover. Just a matter of minutes but she was impressed ;-)
For jotting down your history or leaving notes, ink will survive longer than pencil so pen and ink - and perhaps a "pen knife" to sharpen that turkey quill?
Unless you're very neat, lined notebook paper or composition/theme books will produce a document that's more readable in the future. If your cursive isn't the best - or you kids/grandkids weren't taught cursive - perhaps block printing. In the near future, I have a little solar power, paper and ink/toner to print electronically for lasting documents that are universally readable.
The Luci (and other lights from MPOWERD) have lithium batteries so should be good for perhaps 2000 cycles (to full discharge) - much longer if you recharge them before they go dark.
I have two Chinese knock-off self-winding watches. Reasonably accurate and they last a while if not in daily use - if SHTF, we'd be depending on the windup wall clock for long-term time reference.
Include "How To Build An Outhouse" in your reference books - it's in the Storey Country Wisdom book series.
Maybe a cookbook or two on "Cooking From Scratch"? Or some from "Farm Journal" magazine's series of cookbooks?