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Proving once again that we have an excellent and helpful community here, member hosemary explained how I can copy (and save) a QR Code for receiving addresses in Electrum's wallets.  This allows me to just bring a few small pieces of paper in case I want to buy BTC "somewhere" without having to use a cellphone or computer. 

I just downloaded Electrum a few days ago.  Version 4.5.8 (latest).  Anyone interested in the rather useful Electrum wallet and its capabilities can check that out (how to copy and save QR Codes) over at the Electrum thread I started earlier today.

I like Electrum for the below reasons:

1)  You can make an Electrum wallet that uses "1xxx" addresses, you can also make an Electrum wallet using "3xxx" (but you have to Google-search to find out how to do it)

2)  Electrum allows "batch payments" (sending BTC to various receivers)

3)  I downloaded the program onto flash drives that I can take with me when I travel (as long as someone will let me use their Windows computer), just in case

4)  And, of course, the fact that you can create QR Codes that you can copy and then print onto paper


Like most of us, I like to explore easy-to-use wallets that have capabilities of interest.  I am also pleased with my Trezor Model T and BitBox02 hardware wallets.  Trezor also allows batch payments, but BitBox has QR Codes that you can copy (and then paste and print) and BitBox also offers "3xxx" addresses.