As the supply issue worsens and the country is barreling towards disaster there are a few more items you might want to stock up or replace while you can.
Socks, underwear, t-shirts, etc. basically any clothing items as nearly all of them are produced overseas and as such will become increasingly difficult to obtain. Do you have a good winter coat?
Shoes are always a good item to have a few extra of. I usually keep several back up pair and that has come in handy on several occasions. You may want to make sure you have some good sturdy work boots or hiking boots on hand just in case. You may want to consider keeping an extra pair in your vehicle. Like the clothing, most shoes are made overseas and are likely sitting off the coast of CA.
Gloves. Weather work gloves or cold weather or even gardening gloves, having a variety is again always a good idea. I have a couple of nice deer skin gloves for colder weather, but I keep a good supply of work gloves that I purchase in bulk at Home Depot.
Engine oil, filters etc. for your vehicle, 4 wheeler, tiller, generator, etc. As oil prices continue to rise and repair parts are in short supply, having some extra put back might be a smart play depending on your situation. How’s the tread wear on your tires? I’m hearing that tire prices are up more than 10% in some places and getting harder to find.
Medications, vitamins, etc., I take a lot of supplements in addition to my heart meds, so this has been a big one for us. I can live without my meds except for the baby aspirin, but supplements would be a very important to maintaining health during high stress times. If fresh fruits and veggies are not readily available, those supplements might be the key to staying healthy.
Ammunition. Yes, this is as basic as canned goods, but although it’s still awfully expensive it is more available than it has been in a long time. This might be an opportunity, though an expensive one, to fill a few holes in your supplies.
Obviously, these few items by themselves are not what you need to survive what’s coming down the pike, but rather some items that you may not have considered or that are becoming more difficult to obtain. What are you stocking up on these days?
Hope for the best, prepare for the worst.
Prepper 365 
A step ahead of you on this one, I ordered 4 large packs of under ware as well as socks. I noticed at wally world that pickings were slim this summer.
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We knew this as fortress prepping.
Only I have a question which we faced 10 years ago.
We had loads of supplies, a tonne and a half of equipment, and equipped for any weather or event.
Then we were dispossessed.
Two cars, no where to go, the bare essentials, and had to drive away from what we had built up.
Now answer this.
For all your planning, your stockpiling, and preparations.
What would you do if this happened to you?
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We work closely with my mother-n-law who has a small farm fairly close by as well as other farms in the family within 50 miles. We originally bought this house as a bug out location, but moved here many years ago. Having supplies in multiple locations is ideal, but not possible for everyone.
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You said it, a large percentage of the population aren’t that lucky. In particular those living in a city or larger township.
IMHO, the ability to forage for what you need raises the level for most and starts them thinking about the advantages of the more mobile survivalist.
It also helps to answer, ‘What would you do if you had to provide for yourself.’
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