#1 That is good to know!
Utah Goldbacks, voluntary local currency 1 Utah Goldback 1/1000 oz (0.001 oz) of .999 fine Gold (Not legal tender)
There are other denominations. One way to hold small amounts of gold.
(Also issued by New Hampshire and Nevada. )
https://www.apmex.com/ among others have them. (Don’t have any yet but thinking about it.)
I carry five Austrian Ducats (.1 oz each) in my wallet behind my ID card. I have used them a couple of times to make purchases.
You can also get "Cards" of gold or silver that are divided into tenths or grams that you can easily break off. The smaller cards are just a bit thicker than an ordinary credit card and carry easily in your wallet.