How about using a wingnut instead of a nut?
I had some errands to run in town today, so I stopped at the local Fleet store to check out a wingnut for my repair tool case. Turns out, a single wingnut sells for $1.19 each! Yeah, I'm not going to do that.
Here I was thinking a wingnut might cost me 5 cents, or 10 cents at the most. It was a real shocker to see they wanted $1.19 for just one wingnut. Just goes to show how long it has been since I actually needed a wingnut and/or paid for one.Back at home, I looked up some assortment kits for wingnuts at Amazon and found one kit that looks promising...
That comes out to under 7 cents per wingnut. Of course, I would be buying a lot more wingnuts than I currently need, but I like the mix of both standard and metric wingnuts in that assortment set in a plastic storage case. Probably the last wingnut kit I would ever have to buy. I decided to put that item on my Amazon wish list.
I still want to look around at other options, like maybe Harbor Freight. I have purchased a number of assortment kits from them on other stuff, usually when they have a good sale or coupons.
Might even find a wingnut laying around the garage now that I am cleaning up stuff and getting things more organized. I never throw stuff like that away, but it's like going on a treasure hunt with nothing much organized. Just jars full of miscellaneous hardware to look through.

Now you got me thinking about too many ways to modify that nut. I imagine I will be up half the night thinking of more ways to improve that nut!
