Here is a mini project that has all of the Material-UI icons combined into 4 images. It uses sub images and the array .find function to let you search for any of the icons and display them. The names are the same as you would find here:
https://material.io/resources/icons/?style=baseline
There's 4 examples where I'm searching and displaying the icons in the project. But this is how:
spr = CreateSprite(icon[icon.find("history")].imageID)
This is their license on their repository:
We have made these icons available for you to incorporate into your products under the Apache License Version 2.0. Feel free to remix and re-share these icons and documentation in your products. We'd love attribution in your app's about screen, but it's not required. The only thing we ask is that you not re-sell these icons.
https://github.com/google/material-design-icons
I will be adding this to OryUI
OryUI - A WIP AGK2 UI Framework