Looking back over the quite-a-few years, I recall the need to always create a favicon for a website. It seemed to be one of the last things I did. It is important, but can wait.
As usual, the requirements for this aspect of a website change routinely, so it becomes necessary to research what to do as the need arises.
Happily, there are some fantastic resources to help web designers quickly create the various favicons needed for the platforms and devices that need one. I settled on one.
I have used REAL FAVICON GENERATOR for several needs recently, and gotta hand it to them. The service works great and saved me a lot of trouble. Thanks, REALFAV!