Silver should be had for small purchases. “Junk” silver in the form of pre-1965 Dimes and Quarters will become very valuable. To put your mind around it, a silver Dime might buy a full meal for two or even four. A Quarter might buy a piece of clothing. An ounce of silver used to be a day’s wages. It might become that again once things settle down.
A full silver ounce bar is just worth 10 Dimes (which are 1/10th ounce), so it is like having a big bill. However, people may not trust that bar, so a Silver Dollar (US Silver Eagle) would be advisable. They cost $1-$3 more than junk silver per ounce but they are a larger storage of wealth. A good idea to have some and not silver bars, which usually have a stamp of authenticity but people may not trust them because they don’t know those stamps. I don’t know them, and few people do.
So, yes, pre-1965 Dimes and Quarters and Silver Eagles from any year are advisable.
I’m surprised that people aren’t buying the silver and then melting into their own ingots - just to be sure of what they are getting. The stories about gold bars with tungsten cores are interesting, and apparently true.
The way it worked, a silver dollar, two half dollars, four quarters, and ten dimes all contained the same weight of silver (when new), .7734 ounces of silver.
Because of wear, 'junk' silver is commonly estimated at between .72 and .75 ounces per dollar (face value).
The 1964 coins were the last minted and usually hoarded before they became worn much at all, so they tend to command a premium.