We use icons all the time. Sometimes it is a simple FontAwesome or Icomoon fonts. Other times we make our own through Illustrator. We stumbled upon Google’s icons and discovered there are a ton of them. Great looking artwork and easy to use. We watched the following video before using them and found it helpful.

https://www.youtube.com/watch?v=D9ciQq6cwmI

Here is a link to the Google Icons page.

https://fonts.google.com/icons

Let us know if this helped you.